Asymptotically Safe Inflation (2009)
Inflation is studied in the context of asymptotically safe theories of gravitation. It is found to be possible under several circumstances to have a long period of nearly exponential expansion that...
Solía leer mucha ciencia ficción cuando era niño. Aunque desde muy temprano supe que iba a ser un científico, lo que me interesaba en la ciencia ficción no era la ciencia sino la visión de...
Effective Field Theory, Past and Future (2009)
This is a written version of the opening talk at the 6th International Workshop on Chiral Dynamics, at the University of Bern, Switzerland, July 6, 2009, to be published in the proceedings of the...
This is the written version of a talk given in memory of Gunnar K\"{a}ll\'{e}n, at the Departments of Theoretical Physics, Physics, and Astronomy of Lund University on February 13, 2009. It will be...
Non-Gaussian Correlations Outside the Horizon II: The General Case (2008)
The results of a recent paper [0808.2909] are generalized. A more detailed proof is presented that under essentially all conditions, the non-linear classical equations governing matter and...
Non-Gaussian Correlations Outside the Horizon (2008)
It is shown that under essentially all conditions, the non-linear classical equations governing gravitation and matter in cosmology have a solution in which far outside the horizon in a suitable...
A Tree Theorem for Inflation (2008)
It is shown that the generating function for tree graphs in the "in-in" formalism may be calculated by solving the classical equations of motion subject to certain constraints. This theorem is...
Effective Field Theory for Inflation (2008)
The methods of effective field theory are used to study generic theories of inflation with a single inflaton field. For scalar modes, the leading corrections to the ${\cal R}$ correlation function...
tains a contribution by astrophysicist (2007)
Of Sheldon Glashow, Steven Weinberg, James Maxwell Bardeen
We recently identtiled and discussed the most-cited life-sciences articles published in 1983.1 In thk essay, we cover the physical sciences. The most cited of the 103 papers in this study, which are...
A Unitary Parallel Filter Bank Approach to Magnetic Resonance Tomography (2007)
Ernst Binz, Walter Schempp, Steven Weinberg, Paul Christian, E. Binz
The purpose of the present paper is to establish a unitary parallel multichannel filter bank approach to clinical magnetic resonance tomography and magnetic resonance microscopy. The approach which...
Tensor Microwave Background Fluctuations for Large Multipole Order (2007)
Flauger, Raphael, Weinberg, Steven
We present approximate formulas for the tensor BB, EE, TT, and TE multipole coefficients for large multipole order l. The error in using the approximate formula for the BB multipole coefficients is...
A No-Truncation Approach to Cosmic Microwave Background Anisotropies (2006)
We offer a method of calculating the source term in the line-of-sight integral for cosmic microwave background anisotropies without using a truncated partial-wave expansion in the Boltzmann hierarchy.
Quantum Contributions to Cosmological Correlations II: Can These Corrections Become Large? (2006)
This is a sequel to a previous detailed study of quantum corrections to cosmological correlations. It was found there that except in special cases these corrections depend on the whole history of...
Living in the Multiverse (2005)
This is the written version of the opening talk at the symposium "Expectations of a Final Theory," at Trinity College, Cambridge, on September 2, 2005. It is to be published in Universe or...
Quantum Contributions to Cosmological Correlations (2005)
The ``in-in'' formalism is reviewed and extended, and applied to the calculation of higher-order Gaussian and non-Gaussian correlations in cosmology. Previous calculations of these correlations...
The Making of the Standard Model (2004)
This is the edited text of a talk given at CERN on September 16, 2003, as part of a celebration of the 30th anniversary of the discovery of neutral currents and the 20th anniversary of the discovery...
Must Cosmological Perturbations Remain Non-Adiabatic After Multi-Field Inflation? (2004)
Even if non-adiabatic perturbations are generated in multi-field inflation, the perturbations will become adiabatic if the universe after inflation enters an era of local thermal equilibrium, with no...
Can Non-Adiabatic Perturbations Arise After Single-Field Inflation? (2004)
It is shown that non-adiabatic cosmological perturbations cannot arise during the period of reheating following inflation with a single scalar inflaton field.
The Making of the Standard Model (2004)
This is the edited text of a talk given at CERN on Septembr 16, 2003, as part of a celebration of the 30th anniversary of the discovery of neutral currents and the 20th anniversary of the discovery...
Damping of Tensor Modes in Cosmology (2003)
An analytic formula is given for the traceless transverse part of the anisotropic stress tensor due to free streaming neutrinos, and used to derive an integro-differential equation for the...
Plantar cara : la ciencia y sus adversarios culturales (2003)
Traducción de: Facing Up
Cosmological Fluctuations of Short Wavelength (2002)
This paper presents a completely analytic treatment of cosmological fluctuations whose wavelength is small enough to come within the horizon well before the energy densities of matter and radiation...
Conference Summary - 20th Texas Symposium on Relativistic Astrophysics (2001)
This is the written version of the summary talk given at the 20th Texas Symposium on Relativistic Astrophysics in Austin, Texas, on December 15, 2000. After a brief summary of some of the highlights...
It is shown that the fluctuation in the temperature of the cosmic microwave background in any direction may be evaluated as an integral involving scalar and dipole form factors, which incorporate all...
Fluctuations in the Cosmic Microwave Background II: $C_\ell$ at Large and Small $\ell$ (2001)
General asymptotic formulas are given for the coefficient $C_\ell$ of the term of multipole number $\ell$ in the temperature correlation function of the cosmic microwave background, in terms of...
Essays on wealth, saving and financial markets / (2001)
Weinberg, Steven (Steven Aric)
Submitted to the Department of Economics.
Curvature Dependence of Peaks in the Cosmic Microwave Background Distribution (2000)
The widely cited formula $\ell_1\simeq 200 \Omega_0^{-1/2}$ for the multipole number of the first Doppler peak is not even a crude approximation in the case of greatest current interest, in which the...
The Cosmological Constant Problems (Talk given at Dark Matter 2000, February, 2000) (2000)
The old cosmological constant problem is to understand why the vacuum energy is so small; the new problem is to understand why it is comparable to the present mass density. Several approaches to...
A Priori Probability Distribution of the Cosmological Constant (2000)
In calculations of the probability distribution for the cosmological constant, it has been previously assumed that the a priori probability distribution is essentially constant in the very narrow...
[The Quantum Theory of Fields] (2000)
Contenido: Introducción histórica; Algebras supersimétricas; Teorías de campos supersimétricos; Teorías de medición supersimétricas; Versiones supersimétricas del modelo standar; Más allá...
[The Quantum Theory of Fields] (2000)
Contenido: Introducción histórica; Algebras supersimétricas; Teorías de campos supersimétricos; Teorías de medición supersimétricas; Versiones supersimétricas del modelo standar; Más allá...
Non-Renormalization Theorems in Non-Renormalizable Theories (1998)
A perturbative non-renormalization theorem is presented that applies to general supersymmetric theories, including non-renormalizable theories in which the $\int d^2\theta$ integrand is an arbitrary...
Effective Field Theories in the Large $N$ Limit (1997)
Various effective field theories in four dimensions are shown to have exact non-trivial solutions in the limit as the number $N$ of fields of some type becomes large. These include extended versions...
What is Quantum Field Theory, and What Did We Think It Is? (1997)
This is a talk presented at the conference ``Historical and Philosophical Reflections on the Foundations of Quantum Field Theory,'' at Boston University, March 1996. It will be published in the...
Likely Values of the Cosmological Constant (1997)
Martel, Hugo, Shapiro, Paul R., Weinberg, Steven
In theories in which the cosmological constant Lambda takes a variety of values in different ``subuniverses,'' the probability distribution of its observed values is conditioned by the requirement...
Theories of the Cosmological Constant (1996)
This is a talk given at the conference ``Critical Dialogues in Cosmology'' at Princeton University, June 24-- 27, 1996. It gives a brief summary of our present theoretical understanding regarding the...
[The Quantum Theory of Fields] (1996)
Contenido: Teorías de medición no Abelianas; Métodos de campos externos; Renormalización de teorías de medición; Renormalización de métodos de grupo; Simetrías globales espontáneas y...
[The Quantum Theory of Fields] (1996)
Contenido: Teorías de medición no Abelianas; Métodos de campos externos; Renormalización de teorías de medición; Renormalización de métodos de grupo; Simetrías globales espontáneas y...
Theories of the Cosmological Constant (1996)
Abstract | This is a talk given at the conference Critical Dialogues in Cosmology at Princeton University, June 24{27, 1996. It gives a brief summary of our present theoretical understanding...
Are Nonrenormalizable Gauge Theories Renormalizable? (1995)
Gomis, Joaquim, Weinberg, Steven
We raise the issue whether gauge theories, that are not renormalizable in the usual power-counting sense, are nevertheless renormalizable in the modern sense that all divergences can be cancelled by...
[The Quantum Theory of Fields] (1995)
Contenido: Introducción histórica; Mecánica cuántica relativista; Teoría de la dispersión; Principio de descomposición de Cluster; Campos cuánticos y antipartículas; Las reglas de Feynman;...
[The Quantum Theory of Fields] (1995)
Contenido: Introducción histórica; Mecánica cuántica relativista; Teoría de la dispersión; Principio de descomposición de Cluster; Campos cuánticos y antipartículas; Las reglas de Feynman;...
Strong Interactions at Low Energy (1994)
This is a revised version of a talk given at the Chiral Dynamics Workshop at M.I.T., July 25, 1994. It reports results in three areas: (1) The isospin-violating interactions between one...
General Effective Actions (1994)
D'Hoker, Eric, Weinberg, Steven
We investigate the structure of the most general actions with symmetry group $G$, spontaneously broken down to a subgroup $H$. We show that the only possible terms in the Lagrangian density that,...
[El sueño de una teoría final] (1994)
Traducción de: Dreams of a Final Theory. The Search for the Ultimate Laws of Nature
El sueño de una teoría final : la búsqueda de las leyes fundamentales de la naturaleza (1994)
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Effective Action and Renormalization Group Flow of Anisotropic Superconductors (1993)
We calculate the effective action of a superconductor, without assuming that either the electron-electron potential or the Fermi surface obey rotational invariance. This approach leads to the same...
Flavor Changing Scalar Interactions (1993)
Hall, Lawrence, Weinberg, Steven
The smallness of fermion masses and mixing angles has recently been been attributed to approximate global $U(1)$ symmetries, one for each fermion type. The parameters associated with these symmetry...
[El sueño de una teoría final] (1993)
El éxito de la física en este siglo no sólo ha transformado nuestra concepción del espacio y del tiempo, sino nuestra percepción de la naturaleza: la antigua posición central que asignábamos a...
[El sueño de una teoría final] (1993)
El éxito de la física en este siglo no sólo ha transformado nuestra concepción del espacio y del tiempo, sino nuestra percepción de la naturaleza: la antigua posición central que asignábamos a...
Talk presented at the XXVI International Conference on High Energy Physics, Dallas, Texas, August, 12, 1992.
Three-Body Interactions Among Nucleons and Pions (1992)
A chiral invariant effective Lagrangian may be used to calculate the three-body interactions among low-energy pions and nucleons in terms of known parameters. This method is illustrated by the...
7th Jerusalem Winter School for Theoretical Physics (1991)
Coleman, Sidney Richard, Hartle, James B, Piran, Tsvi, Weinberg, Steven
Los tres primeros minutos del universo: una concepción moderna del origen del universo (1991)
Traducción de: The First Three Minutes - A Modern View of the Universe
Traducción de: The First Three Minutes - A Modern View of the Universe
"Decoupling" constraints on massless composite particles (1981)
Preskill, John, Weinberg, Steven
It is pointed out that the use of the "decoupling" constraints on the spectrum of composite massless particles is not justified without further assumptions. There is an alternative condition, whose...
Traducción de: The first three minutes-A modern view of the universe
I primi tre minuti, l'affascinante storia dell'origine dell'universo, Steven Weinberg. . - Milano. NALUAF000464. , A. Mondadori. NAEDAF000056, 1977.
Incluye bibliografía e índice
What Accounts for the Variation in Retirement Wealth among U.S. Households?
B. Douglas Bernheim, Jonathan Skinner, Steven Weinberg
Even among households with similar socioeconomic characteristics, saving and wealth vary considerably. Life-cycle models attribute this variation to differences in time preference rates, risk...
What Accounts for the Variation in Retirement Wealth Among U.S. Households?
B. Douglas Bernheim, Jonathan Skinner, Steven Weinberg
Household survey data consistently depict large variations in saving and wealth among households with similar socio-economic characteristics. Within the context of the life" cycle hypothesis,...
What Accounts for the Variation in Retirement Wealth Among U.S. Households?
B. Douglas Bernheim, Jonathan Skinner, Steven Weinberg
September 1997 Household survey data consistently depict large variations in saving and wealth, even among households with similar socio-economic characteristics. Within the context of the life...