Neutralino Dark Matter in BMSSM Effective Theory (2009)
Berg, Marcus, Edsjo, Joakim, Gondolo, Paolo, Lundstrom, Erik, Sjors, Stefan
We study thermal neutralino dark matter in an effective field theory extension of the MSSM, called "Beyond the MSSM" (BMSSM) in Dine, Seiberg and Thomas (2007). In this class of effective field...
Glueballs vs. Gluinoballs: Fluctuation Spectra in Non-AdS/Non-CFT (2008)
Berg, Marcus, Haack, Michael, Mück, Wolfgang
Building on earlier results on holographic bulk dynamics in confining gauge theories, we compute the spin-0 and spin-2 spectra of the Maldacena–Nuñez and Klebanov–Strassler theories, that have...
In quantum field theory the “normal ordering” of operators is routinely used, which amounts to shuffling all creation operators to the left. Potentially confusing is the occurrence in the...
Jumping Through Loops: On Soft Terms from Large Volume Compactifications (2007)
Berg, Marcus, Haack, Michael, Pajer, Enrico
We subject the phenomenologically successful large volume scenario of hep-th/0502058 to a first consistency check in string theory. In particular, we consider whether the expansion of the string...
Holography of D-Brane Reconnection (2007)
Samtleben, Henning, Berg, Marcus, Hohm, Olaf
Gukov, Martinec, Moore and Strominger found that the D1-D5-D5' system with the D5-D5' angle at 45 degrees admits a deformation "rho" preserving supersymmetry. Under this deformation, the D5-branes...
Holography of D-Brane Reconnection (2007)
Berg, Marcus, Hohm, Olaf, Samtleben, Henning
Gukov, Martinec, Moore and Strominger found that the D1-D5-D5' system with the D5-D5' angle at 45 degrees admits a deformation "rho" preserving supersymmetry. Under this deformation, the D5-branes...
Holography of D-Brane Reconnection (2007)
Samtleben, Henning, Berg, Marcus, Hohm, Olaf
Gukov, Martinec, Moore and Strominger found that the D1-D5-D5' system with the D5-D5' angle at 45 degrees admits a deformation "rho" preserving supersymmetry. Under this deformation, the D5-branes...
Glueballs vs. Gluinoballs: Fluctuation Spectra in Non-AdS/Non-CFT (2006)
Berg, Marcus, Haack, Michael, Muck, Wolfgang
Building on earlier results on holographic bulk dynamics in confining gauge theories, we compute the spin-0 and spin-2 spectra of gauge theories dual to the non-singular Maldacena-Nunez and...
Holography of D-Brane Reconnection (2006)
Berg, Marcus, Hohm, Olaf, Samtleben, Henning
Gukov, Martinec, Moore and Strominger found that the D1-D5-D5' system with the D5-D5' angle at 45 degrees admits a deformation "rho" preserving supersymmetry. Under this deformation, the D5-branes...
On Volume Stabilization by Quantum Corrections (2005)
Berg, Marcus, Haack, Michael, Kors, Boris
We discuss prospects for stabilizing the volume modulus of N=1 supersymmetric type IIB orientifold compactifications using only perturbative corrections to the Kahler potential. Concretely, we...
String Loop Corrections to Kahler Potentials in Orientifolds (2005)
Berg, Marcus, Haack, Michael, Kors, Boris
We determine one-loop string corrections to Kahler potentials in type IIB orientifold compactifications with either N=1 or N=2 supersymmetry, including D-brane moduli, by evaluating string scattering...
Bulk Dynamics in Confining Gauge Theories (2005)
Berg, Marcus, Haack, Michael, Muck, Wolfgang
We consider gauge/string duality (in the supergravity approximation) for confining gauge theories. The system under scrutiny is a 5-dimensional consistent truncation of type IIB supergravity obtained...
On the Moduli Dependence of Nonperturbative Superpotentials in Brane Inflation (2004)
Berg, Marcus, Haack, Michael, Kors, Boris
We discuss string corrections to the effective potential in various models of brane inflation. These corrections contribute to the mass of the inflaton candidate and may improve its slow-roll...
Loop Corrections to Volume Moduli and Inflation in String Theory (2004)
Berg, Marcus, Haack, Michael, Kors, Boris
The recent progress in embedding inflation in string theory has made it clear that the problem of moduli stabilization cannot be ignored in this context. In many models a special role is played by...
Brane/Flux Interactions in Orientifolds (2003)
Berg, Marcus, Haack, Michael, Kors, Boris
Combining the benefits of D-branes and background fluxes in string compactifications opens up the possibility to explore phenomenologically interesting brane world models with stabilized moduli....
An Orientifold with Fluxes and Branes via T-duality (2003)
Berg, Marcus, Haack, Michael, Kors, Boris
String compactifications with non-abelian gauge fields localized on D-branes, with background NSNS and RR 3-form fluxes, and with non-trivial warp factors, can naturally exist within T-dual versions...
Calabi-Yau Fourfolds with Flux and Supersymmetry Breaking (2002)
Berg, Marcus, Haack, Michael, Samtleben, Henning
In Calabi-Yau fourfold compactifications of M-theory with flux, we investigate the possibility of partial supersymmetry breaking in the three-dimensional effective theory. To this end, we place the...
Holography and Infrared Conformality in Two Dimensions (2002)
This is a very brief review of some results from hep-th/0112154 and hep-th/0209191. In holographic renormalization, we studied the RG flow of a 2d N=(4,4) CFT perturbed by a relevant operator,...
In quantum field theory, physicists routinely use "normal ordering" of operators, which just amounts to shuffling all creation operators to the left. Potentially confusing, then, is the occurrence in...
Fourier Transforms of Lorentz Invariant Functions (2002)
Wurm, Alexander, Krausz, Nurit, DeWitt-Morette, Cecile, Berg, Marcus
Fourier transforms of Lorentz invariant functions in Minkowski space, with support on both the timelike and the spacelike domains are performed by means of direct integration. The cases of 1+1 and...
Holographic Correlators in a Flow to a Fixed Point (2002)
Berg, Marcus, Samtleben, Henning
Using holographic renormalization, we study correlation functions throughout a renormalization group flow between two-dimensional superconformal field theories. The ultraviolet theory is an N=(4,4)...
Zugl.: Darmstadt, Techn. Univ., Diss., 2001.
An Exact Holographic RG Flow Between 2d Conformal Fixed Points (2001)
Berg, Marcus, Samtleben, Henning
We describe a supersymmetric RG flow between conformal fixed points of a two-dimensional quantum field theory as an analytic domain wall solution of the three-dimensional SO(4) x SO(4) gauged...
Estimation of hydrophobicity of insulating surfaces by studying sessile water drops / (2001)
Thesis (Ph. D.)--Uppsala University, 2001.
Characterizing Volume Forms (2000)
Cartier, Pierre, Berg, Marcus, DeWitt-Morette, Cecile, Wurm, Alex
Old and new results for characterizing volume forms in functional integration.