Searching for Signatures of Cosmic Superstrings in the CMB (2009)
Danos, Rebecca J., Brandenberger, Robert H.
Because cosmic superstrings generically form junctions and gauge theoretic strings typically do not, junctions may provide a signature to distinguish between cosmic superstrings and gauge theoretic...
Processing of Cosmological Perturbations in a Cyclic Cosmology (2009)
The evolution of the spectrum of cosmological fluctuations from one cycle to the next is studied. It is pointed out that each cycle leads to a reddening of the spectrum. This opens up new ways to...
Alternatives to Cosmological Inflation (2009)
The inflationary paradigm, although very successful phenomenologically, suffers from several conceptual problems which motivate the search for alternative scenarios of early universe cosmology. Here,...
Cyr-Racine, Francis-Yan, Brandenberger, Robert H.
We study how the resonant decay of moduli fields arising in the Minimal Supersymmetric Standard Model (MSSM) could affect large scale curvature perturbations in the early universe. It has been known...
Magnetic Fields from Heterotic Cosmic Strings (2008)
Gwyn, Rhiannon, Alexander, Stephon, Brandenberger, Robert H., Dasgupta, Keshav
Large-scale magnetic fields are observed today to be coherent on galactic scales. While there exists an explanation for their amplification and their specific configuration in spiral galaxies -- the...
Canny Algorithm, Cosmic Strings and the Cosmic Microwave Background (2008)
Danos, Rebecca J., Brandenberger, Robert H.
We describe a new code to search for signatures of cosmic strings in cosmic microwave anisotropy maps. The code implements the Canny Algorithm, an edge detection algorithm designed to search for the...
Reheating in a Brane Monodromy Inflation Model (2008)
Brandenberger, Robert H., Knauf, Anke, Lorenz, Larissa C.
We study reheating in a recently proposed brane "monodromy inflation" model in which the inflaton is the position of a D4 brane on a "twisted torus". Specifically, we study the repeated collisions...
Adiabatic fluctuations from cosmic strings in a contracting universe (2008)
Brandenberger, Robert H., Takahashi, Tomo, Yamaguchi, Masahide
We show that adiabatic, super-Hubble, and almost scale invariant density fluctuations are produced by cosmic strings in a contracting universe. An essential point is that isocurvature perturbations...
Preheating with Non-Standard Kinetic Term (2008)
Lachapelle, Jean, Brandenberger, Robert H.
We consider reheating after inflation in theories with a non-standard kinetic term. We show that the equation that exhibits parametric resonance is the Hill-Whittaker equation, which is a particular...
String gas cosmology is a string theory-based approach to early universe cosmology which is based on making use of robust features of string theory such as the existence of new states and new...
Speed of Sound in String Gas Cosmology (2008)
Lashkari, Nima, Brandenberger, Robert H.
We consider an ensemble of closed strings in a compact space with stable one cycles and compute the speed of sound resulting from string thermodynamics. Possible applications to the issue of Jeans...
Stabilizing moduli with thermal matter and nonperturbative effects (2008)
Danos, Rebecca J., Frey, Andrew R., Brandenberger, Robert H.
Even with recent progress, it is still very much an open question to understand how all compactification moduli are stabilized, since there are several mechanisms. For example, it is possible to...
A Study of Structure Formation and Reheating in the D3/D7 Brane Inflation Model (2008)
Brandenberger, Robert H., Dasgupta, Keshav, Davis, Anne-Christine
We study the spectrum of cosmological fluctuations in the D3/D7 brane inflationary universe with particular attention to the parametric excitation of entropy modes during the reheating stage. The...
Entropy Fluctuations in Brane Inflation Models (2007)
Brandenberger, Robert H., Frey, Andrew R., Lorenz, Larissa C.
We study the development of entropy fluctuations in brane inflation in a warped throat, including the brane-antibrane tachyon as the waterfall field. We find that there is a period at the end of...
NONSINGULAR COSMOLOGY AND PLANCK SCALE PHYSICS[? (2007)
New Planck scale physics may solve the singularity problems of classical general relativity and may lead to interesting consequences for very early Universe cosmology. Two approaches to these...
Cosmic Strings and Weak Gravitational Lensing (2007)
Dyda, Sergei, Brandenberger, Robert H.
We study the deflection of light in the background of a "wiggly" cosmic string, and investigate whether it is possible to detect cosmic strings by means of weak gravitational lensing. For straight...
Detecting Cosmic Strings in the CMB with the Canny Algorithm (2007)
Amsel, Stephen, Berger, Joshua, Brandenberger, Robert H.
Line discontinuities in cosmic microwave background anisotropy maps are a distinctive prediction of models with cosmic strings. These signatures are visible in anisotropy maps with good angular...
Evolution of Gravitational Perturbations in Non-Commutative Inflation (2007)
Koh, Seoktae, Brandenberger, Robert H.
We consider the non-commutative inflation model of [3] in which it is the unconventional dispersion relation for regular radiation which drives the accelerated expansion of space. In this model, we...
On the Transfer of Adiabatic Fluctuations through a Nonsingular Cosmological Bounce (2007)
Alexander, Stephon, Biswas, Tirthabir, Brandenberger, Robert H.
We study the transfer of cosmological perturbations through a nonsingular cosmological bounce in a special model in which the parameters of the bounce and the equation of state of matter are chosen...
Emergence of Fluctuations from a Tachyonic Big Bang (2007)
Brandenberger, Robert H., Frey, Andrew R., Kanno, Sugumi
It has recently been speculated that the end state of a collapsing universe is a tachyonic big crunch. The time reversal of this process would be the emergence of an expanding universe from a...
Towards A Nonsingular Tachyonic Big Crunch (2007)
Brandenberger, Robert H., Frey, Andrew R., Kanno, Sugumi
We discuss an effective field theory background containing the gravitational field, the dilaton and a closed string tachyon, and couple this background to a gas of fundamental strings and D strings....
Cosmological Perturbations in Non-Commutative Inflation (2007)
Koh, Seoktae, Brandenberger, Robert H.
We compute the spectrum of cosmological perturbations in a scenario in which inflation is driven by radiation in a non-commutative space-time. In this scenario, the non-commutativity of space and...
In spite of its great phenomenological success, current models of scalar field-driven inflation suffer from important unresolved conceptual issues. New fundamental physics will be required to address...
More on the Spectrum of Perturbations in String Gas Cosmology (2006)
Brandenberger, Robert H., Kanno, Sugumi, Soda, Jiro, Easson, Damien A., Khoury, Justin, Martineau, Patrick, ...
String gas cosmology is rewritten in the Einstein frame. In an effective theory in which a gas of closed strings is coupled to a dilaton gravity background without any potential for the dilaton, the...
String Gas Cosmology and Structure Formation (2006)
Brandenberger, Robert H., Nayeri, Ali, Patil, Subodh P., Vafa, Cumrun
It has recently been shown that a Hagedorn phase of string gas cosmology may provide a causal mechanism for generating a nearly scale-invariant spectrum of scalar metric fluctuations, without the...
Tensor Modes from a Primordial Hagedorn Phase of String Cosmology (2006)
Brandenberger, Robert H., Nayeri, Ali, Patil, Subodh P., Vafa, Cumrun
It has recently been shown that a Hagedorn phase of string gas cosmology can provide a causal mechanism for generating a nearly scale-invariant spectrum of scalar metric fluctuations, without the...
Producing a Scale-Invariant Spectrum of Perturbations in a Hagedorn Phase of String Cosmology (2005)
Nayeri, Ali, Brandenberger, Robert H., Vafa, Cumrun
We study the generation of cosmological perturbations during the Hagedorn phase of string gas cosmology. Using tools of string thermodynamics we provide indications that it may be possible to obtain...
The Robustness of Inflation to Changes in Super-Planck-Scale Physics (2005)
Brandenberger, Robert H., Martin, Jérome
We calculate the spectrum of density fluctuations in models of inflation based on a weakly self-coupled scalar matter field minimally coupled to gravity, and specifically investigate the dependence...
Moduli Stabilization in String Gas Cosmology (2005)
String gas cosmology is an approach towards studying the effects of superstring theory on early universe cosmology which is based on new symmetries and new degrees of freedom of string theory. Within...
Challenges for String Gas Cosmology (2005)
In spite of the phenomenological successes of the inflationary universe scenario, the current realizations of inflation making use of scalar fields lead to serious conceptual problems which are...
Looking Beyond Inflationary Cosmology (2005)
In spite of the phenomenological successes of the inflationary universe scenario, the current realizations of inflation making use of scalar fields lead to serious conceptual problems which are...
T-Duality and the Spectrum of Gravitational Waves (2005)
Chouha, Paul Robert, Brandenberger, Robert H.
In the inflationary universe scenario, the physical wavelength of cosmological fluctuation modes which are currently probed in observations was shorter than the Hubble radius, and in fact shorter...
Dynamical CP Violation in the Early Universe and Leptogenesis (2005)
Balaji, K. R. S., Biswas, Tirthabir, Brandenberger, Robert H., London, David
In a recent publication, we suggested a mechanism for obtaining dynamical CP violation in the early Universe based on the out-of-equilibrium evolution of complex scalar fields. In this paper, we...
Electroweak Baryogenesis with Embedded Domain Walls (2005)
Brandenberger, Robert H., Kelly, Wessyl, Yamaguchi, Masahide
We consider electroweak baryogenesis mediated by embedded domain walls. Embedded domain walls originating from a symmetry breaking phase transition are stabilized by thermal plasma effects, so that...
The Cosmology of Massless String Modes (2005)
Patil, Subodh P., Brandenberger, Robert H.
We consider the spacetime dynamics of a gas of closed strings in the context of General Relativity in a background of arbitrary spatial dimensions. Our motivation is primarily late time String Gas...
Theory of Cosmological Perturbations and Applications to Superstring Cosmology (2005)
The theory of cosmological perturbations is the main tool which connects theories of the early universe (based on new fundamental physics such as string theory) with cosmological observations. In...
Challenges for Inflationary Cosmology (2004)
Inflationary cosmology has provided a predictive and phenomenologically very successful scenario for early universe cosmology. Attempts to implement inflation using scalar fields, however, lead to...
Back-Reaction and the Trans-Planckian Problem of Inflation Revisited (2004)
Brandenberger, Robert H., Martin, Jerome
It has recently been suggested that Planck scale physics may effect the evolution of cosmological fluctuations in the early stages of cosmological inflation in a non-trivial way, leading to an...
Single Field Baryogenesis (2004)
Balaji, K. R. S., Brandenberger, Robert H.
We propose a new variant of the Affleck-Dine baryogenesis mechanism in which a rolling scalar field couples directly to left- and right-handed neutrinos, generating a Dirac mass term through neutrino...
Back-Reaction of Cosmological Perturbations in the Infinite Wavelength Approximation (2004)
Brandenberger, Robert H., Lam, C. S.
Cosmological perturbations in an expanding universe back-react on the space-time in which they propagate. Calculations to lowest non-vanishing order in perturbation theory indicate that...
Inflation in Gauged 6D Supergravity (2004)
Brandenberger, Robert H., Randjbar-Daemi, S.
In this note we demonstrate that chaotic inflation can naturally be realized in the context of an anomaly free minimal gauged supergravity in D=6 which has recently been the focus of some attention....
Dynamical CP Violation in the Early Universe (2004)
Balaji, K. R. S., Biswas, Tirthabir, Brandenberger, Robert H., London, David
Following earlier ideas of Dolgov, we show that the asymmetrical dynamical evolution of fields in the early Universe provides a new source for CP violation. This can lead to baryogenesis without any...
Note on the Robustness of the Neutrino Mass Bounds from Cosmology (2004)
Brandenberger, Robert H., Mazumdar, Anupam, Yamaguchi, Masahide
The recent high precision maps of cosmic microwave anisotropies combined with measurements of the galaxy power spectrum from new large-scale redshift surveys have allowed stringent bounds on the sum...
Spectral Dependence of CMB Polarization and Parity (2003)
Balaji, K. R. S., Brandenberger, Robert H., Easson, Damien A.
The polarization of the cosmic microwave background radiation (CMBR) can serve as a probe for nonstandard parity violating interactions. Many such interactions are predicted in particle physics...
Lectures on the Theory of Cosmological Perturbations (2003)
The theory of cosmological perturbations has become a cornerstone of modern quantitative cosmology since it is the framework which provides the link between the models of the very early Universe such...
Spontaneous baryogenesis in warm inflation (2003)
Brandenberger, Robert H., Yamaguchi, Masahide
We discuss spontaneous baryogenesis in the warm inflation scenario. In contrast with standard inflation models, radiation always exists in the warm inflation scenario, and the inflaton must be...
Trans-Planckian Physics and Inflationary Cosmology (2002)
Due to the quasi-exponential red-shifting which occurs during an inflationary period in the very early Universe, wavelengths which at the present time correspond to cosmological lengths are in...
Back Reaction of Cosmological Perturbations and the Cosmological Constant Problem (2002)
The presence of cosmological fluctuations influences the background cosmology in which the perturbations evolve. This back-reaction arises as a second order effect in the cosmological perturbation...
Principles, Progress and Problems in Inflationary Cosmology (2002)
Inflationary cosmology has become one of the cornerstones of modern cosmology. Inflation was the first theory within which it was possible to make predictions about the structure of the Universe on...
Isotropization in Brane Gas Cosmology (2002)
Watson, Scott, Brandenberger, Robert H.
Brane Gas Cosmology (BGC) is an approach to unifying string theory and cosmology in which matter is described by a gas of strings and branes in a dilaton gravity background. The Universe is assumed...
On Signatures of Short Distance Physics in the Cosmic Microwave Background (2002)
Brandenberger, Robert H., Martin, Jerome
Following a self-contained review of the basics of the theory of cosmological perturbations, we discuss why the conclusions reached in the recent paper by Kaloper et al are too pessimistic estimates...
Microwave Background Constraints on Decaying Defects (2002)
Brandenberger, Robert H., Carter, Brandon, Davis, Anne-Christine
Embedded defects are predicted in a host of particle physics theories, in particular in the standard electroweak theory. They can be stabilized by interactions with the cosmological plasma, but will...
The Corley-Jacobson dispersion relation and trans-Planckian inflation (2002)
Martin, Jerome, Brandenberger, Robert H.
In this Letter we study the dependence of the spectrum of fluctuations in inflationary cosmology on possible effects of trans-Planckian physics, using the Corley/Jacobson dispersion relations as an...
Thermal Stabilisation of Superconducting Sigma Strings and their Drum Vortons (2002)
Carter, Brandon, Brandenberger, Robert H., Davis, Anne-Christine
We discuss various issues related to stabilized embedded strings in a thermal background. In particular, we demonstrate that such strings will generically become superconducting at moderately low...
Trans-Planckian Physics and the Spectrum of Fluctuations in a Bouncing Universe (2001)
Brandenberger, Robert H, Joras, Sergio E., Martin, Jerome
In this paper, we calculate the spectrum of scalar field fluctuations in a bouncing, asymptotically flat Universe, and investigate the dependence of the result on changes in the physics on length...
Exponential Growth of Particle Number far from the Parametric Resonance Regime (2001)
Brandenberger, Robert H., Junior, Adolfo Maia
Parametric resonance has received a considerable amount of interest as a good mathematical model to describe the initial stages of the reheating phase (matter creation) in inflationary cosmology. It...
The Promise of String Cosmology (2001)
The interplay between string theory and cosmology is very promising. Since string theory will yield a quantum theory of space-time and unify all forces of nature, it has the potential of addressing...
Universe Generation from Black Hole Interiors (2001)
Easson, Damien A., Brandenberger, Robert H.
We point out that scenarios in which the universe is born from the interior of a black hole may not posses many of the problems of the Standard Big-Bang (SBB) model. In particular we demonstrate that...
Frontiers of Inflationary Cosmology (2001)
After a brief review of the theory of cosmological perturbations, I highlight some recent progress in the area of reheating in inflationary cosmology, focusing in particular on parametric...
A Status Review of Inflationary Cosmology (2001)
The first aim of this lecture is to highlight two areas of recent progress in inflationary cosmology, namely reheating and the quantum theory of cosmological perturbations. The second aim is to...
The Robustness of Inflation to Changes in Super-Planck-Scale Physics (2001)
Brandenberger, Robert H., Martin, Jérome
We calculate the spectrum of density fluctuations in models of inflation based on a weakly self-coupled scalar matter field minimally coupled to gravity, and specifically investigate the dependence...
The Robustness of Inflation to Changes in Super-Planck-Scale Physics (2001)
Brandenberger, Robert H., Martin, Jérome
We calculate the spectrum of density fluctuations in models of inflation based on a weakly self-coupled scalar matter field minimally coupled to gravity, and specifically investigate the dependence...
A Cosmological Window on Trans-Planckian Physics (2000)
Martin, Jerome, Brandenberger, Robert H.
In the framework of inflation, scales which nowadays correspond to large scale structures were smaller than the Planck length at the beginning of inflation. Therefore, measurements of CMBR anisotropy...
Guimaraes, Antonio C. C., Van De Bruck, Carsten, Brandenberger, Robert H.
Observational evidence shows that gravitational lensing induces an angular correlation between the distribution of galaxies and much more distant QSOs. We use weak gravitational lensing theory to...
Topology of the Las Campanas Redshift Survey (2000)
Trac, Hy, Mitsouras, Dimitris, Hickson, Paul, Brandenberger, Robert H.
The topology of the Las Campanas Redshift Survey is analyzed using Minkowski functional statistics, taking into account the selection effects of the survey. The results are compared with the...
The Trans-Planckian Problem of Inflationary Cosmology (2000)
Martin, Jerome, Brandenberger, Robert H.
In most current models of inflation based on a weakly self-coupled scalar matter field minimally coupled to gravity, the period of inflation lasts so long that, at the beginning of the inflationary...
The Robustness of Inflation to Changes in Super-Planck-Scale Physics (2000)
Brandenberger, Robert H., Martin, Jerome
We calculate the spectrum of density fluctuations in models of inflation based on a weakly self-coupled scalar matter field minimally coupled to gravity, and specifically investigate the dependence...
Back Reaction of Cosmological Perturbations (2000)
The presence of cosmological perturbations affects the background metric and matter configuration in which the perturbations propagate. This effect, studied a long time ago for gravitational waves,...
Brandenberger, Robert H., Magueijo, Joao
We review a few off-the-beaten-track ideas in cosmology. They solve a variety of fundamental problems; also they are fun. We start with a description of non-singular dilaton cosmology. In these...
Inflationary Cosmology: Progress and Problems (1999)
These lecture notes intend to form a short pedagogical introduction to inflationary cosmology, highlighting selected areas of recent progress such as reheating and the theory of cosmological...
Nonsingular Dilaton Cosmology in the String Frame (1999)
Easson, Damien A., Brandenberger, Robert H.
We consider the theory obtained by adding to the usual string frame dilaton gravity action specially constructed higher derivative terms motivated by the limited curvature construction of...
Dynamical Breaking of CPT and Baryogenesis (1999)
The asymmetry between matter and antimatter in the Universe indicates that there was a period in the very early Universe when the CPT symmetry was broken. The conservative interpretation is that the...
Anomalous Global Strings and Primordial Magnetic Fields (1998)
Brandenberger, Robert H., Zhang, Xinmin
We propose a new mechanism for the generation of primordial magnetic fields, making use of the magnetic fields which are induced by anomalous global strings which couple to electromagnetism via...
Topological Defects and Cosmology (1998)
Many particle physics models of matter admit solutions corresponding to stable or long-lived topological defects. In the context of standard cosmology it is then unavoidable that such defects will...
High Energy Neutrino, Photon and Cosmic Ray Fluxes from VHS Cosmic Strings (1998)
Wichoski, Ubi F., MacGibbon, Jane H., Brandenberger, Robert H.
Decaying topological defects, in particular cosmic strings, can produce a significant flux of high energy neutrinos, photons and cosmic rays. According to the prevailing understanding of cosmic...
Astrophysical Constraints on Primordial Black Hole Formation from Collapsing Cosmic Strings (1998)
Wichoski, U. F., MacGibbon, Jane H., Brandenberger, Robert H.
Primordial Black Holes (PBH) may have formed from the collapse of cosmic string loops. The spectral shape of the PBH mass spectrum can be determined by the scaling argument for string networks....
Zhang, Xinmin, Huang, Tao, Brandenberger, Robert H.
In this paper we construct a string-like classical solution, the pion-string, in the linear sigma model. We then study the stability of the pion-string, and find that it is unstable in the parameter...
Inflation and the Theory of Cosmological Perturbations (1997)
The hypothesis that the Universe underwent a period of exponential expansion at very early times has become the most popular theory of the early Universe. Not only does it solve some of the problems...
Limits on Black Hole Formation from Cosmic String Loops (1997)
MacGibbon, Jane H., Brandenberger, Robert H., Wichoski, U. F.
In theories with cosmic strings, a small fraction of string loops may collapse to form black holes. In this Letter, various constraints on such models involving black holes are considered. Hawking...
Modern cosmology provides a connection between the physics of particles and fields and observational cosmology. Making use of this link, a wealth of new observational data can be utilized to explore...
Particle Physics Aspects of Modern Cosmology (1997)
Modern cosmology has created a tight link between particle physics / field theory and a wealth of new observational data on the structure of the Universe. These lecture notes focus on some of the...
Some Key Issues Confronting Inflationary Cosmology (1996)
Does inflation provide a compelling explanation for why the universe is so large, so flat, and so old, and a predictive theory of density perturbations? In this brief contribution (based on the role...
Can Asymptotic Series Resolve the Problems of Inflation? (1996)
Brandenberger, Robert H., Zhitnitsky, Ariel R.
We discuss a cosmological scenario in which inflation is driven by a potential which is motivated by an effective Lagrangian approach to gravity. We exploit the recent arguments \cite{ARZ} that an...
Topological Defects and the Formation of Structure in the Universe (1996)
Topological defects, in particular cosmic strings, give rise to an interesting mechanism for generating the primordial perturbations in the early Universe which are required to explain the present...
Physics of the Very Early Universe (1995)
In this report of the workshop on `Physics of the Very Early Universe' held at GR14, the recent status and open problems in a selected number of major areas of interest are reviewed, focusing on...
Implementing Markov's Limiting Curvature Hypothesis (1995)
The effective action for gravity at high curvatures is likely to contain higher derivative terms. These corrections may have profound consequences for the singularity structure of space-time and for...
Formation of Structure in the Universe (1995)
An introduction to modern theories for the origin of structure in the Universe is given. After a brief review of the growth of cosmological perturbations in an expanding Universe and a summary of...
Cosmology and the origin of structure (1995)
With the recent discovery of anisotropies in the cosmic microwave background and with improved deeper redshift surveys, cosmology has entered a new era as a quantitative science. In these lectures,an...
ACCRETION OF HOT DARK MATTER ONTO SLOWLY MOVING COSMIC STRINGS (1995)
Aguirre, Anthony N., Brandenberger, Robert H.
Cosmic strings with small-scale structure have a coarse-grained mass per unit length $\mu$ which is larger than the string tension. This leads to an effective Newtonian gravitational line source and...
NONSINGULAR COSMOLOGY AND PLANCK SCALE PHYSICS (1995)
New Planck scale physics may solve the singularity problems of classical general relativity and may lead to interesting consequences for very early Universe cosmology. Two approaches to these...
Modern Cosmology and Structure Formation (1994)
An introduction to modern cosmology is given, focusing on theories for the origin of structure in the Universe. After a brief review of the theory of growth of cosmological perturbations and a...
Formation of Topological Defects in a Second Order Phase Transition (1994)
Brandenberger, Robert H., Davis, Anne-Christine
The classical evolution equations of the Abelian Higgs model are studied at temperatures below the Ginsburg temperature of a phase transition which is assumed to be second order. It is shown that the...
Topological Defects and Structure Formation (1993)
Topological defects are produced during phase transitions in the very early Universe. They arise in most unified theories of strong, weak and electromagnetic interactions. These lectures focus on the...
Some Statistics for Measuring Large-Scale Structure (1993)
Brandenberger, Robert H., Kaplan, David M., A, Stephen
Good statistics for measuring large-scale structure in the Universe must be able to distinguish between different models of structure formation. In this paper, two and three dimensional ``counts in...
Towards a Nonsingular Universe (1993)
A unified theory of all forces should be nonsingular. In such a unified theory, Einstein's general relativity will be a very low curvature effective theory. At larger curvatures, new terms will...
TOPOLOGICAL DEFECTS AND STRUCTURE FORMATION ⋆ (1993)
Topological defects are produced during phase transitions in the very early Universe. They arise in most unified theories of strong, weak and electromagnetic interactions. These lectures focus on the...
We construct an effective action for gravity in which all homogeneous solutions are nonsingular. In particular, there is neither a big bang nor a big crunch. The action is a higher derivative...
Topological Defect Models of Structure Formation After the COBE Discovery of CMB Anisotropies (1992)
The COBE satellite has discovered anisotropies in the cosmic microwave background (CMB) consistent with a scale invariant spectrum of density perturbations. As reviewed in this lecture, topological...
Electroweak Baryogenesis with a Second Order Phase Transition (1992)
Brandenberger, Robert H., Davis, Anne-Christine
If stable electroweak strings are copiously produced during the electroweak phase transition, they may contribute significantly to the presently observed baryon to entropy ratio of the universe. This...
Gamma Ray Signatures from Ordinary Cosmic Strings (1992)
MacGibbon, Jane H., Brandenberger, Robert H.
We calculate the flux of ultra high energy photons from individual ordinary (i.e. non-superconducting) cosmic strings and compare the results with the sensitivity of current and proposed TeV and EeV...
Superconducting Cosmc Strings and Primordial Magnetic Fields (1992)
Brandenberger, Robert H., Davis, Anne-Christine, Matheson, Andrew M., Trodden, Mark
We consider grand unified theories with superconducting cosmic strings and which admit the mechanism for generating primordial magnetic fields recently discussed by Vachaspati. We show that these...
Electroweak Baryogenesis with Electroweak Strings (1992)
Brandenberger, Robert H., Davis, Anne-Christine
If stable electroweak strings are copiously produced during the electroweak phase transition, they may contribute significantly to the presently observed baryon to entropy ratio of the Universe. This...