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Publications Influence

Wald's entropy is equal to a quarter of the horizon area in units of the effective gravitational coupling

- R. Brustein, Dan Gorbonos, Merav Hadad
- Physics
- 19 December 2007

The Bekenstein-Hawking entropy of black holes in Einstein's theory of gravity is equal to a quarter of the horizon area in units of Newton's constant. Wald has proposed that in general theories of… Expand

102 2- PDF

Entanglement interpretation of black hole entropy in string theory

- R. Brustein, M. Einhorn, A. Yarom
- Physics
- 29 August 2005

We show that the entropy resulting from the counting of microstates of non extremal black holes using field theory duals of string theories can be interpreted as arising from entanglement. The… Expand

61 2- PDF

A model of graceful exit in string cosmology

- R. Brustein, R. Madden
- Physics
- 8 August 1997

We construct, for the first time, a model of graceful exit transition from a dilaton-driven inflationary phase to a decelerated Friedmann-Robertson-Walker era. Exploiting a demonstration that… Expand

105 2- PDF

Graceful Exit in String Cosmology

- R. Brustein, R. Madden
- Physics
- 18 November 1997

The graceful exit transition from a dilaton-driven inflationary phase to a decelerated Friedmann-Robertson-Walker era requires certain classical and quantum corrections to the string effective… Expand

75 2- PDF

Renormalization group equation and non-perturbative effects in string-field theory

- R. Brustein, S. Alwis
- Physics
- 25 March 1991

Abstract We derive the renormalization group equation for string field theory and show that it implies the Batalin-Vilkovisky equation and the factorization equations of first quantized string… Expand

22 2

Space-time versus world-sheet renormalization group equation in string theory

- R. Brustein, K. Roland
- Physics
- 16 March 1992

Abstract We discuss the relation between space-time renormalization group equation for closed string field theory and world-sheet renormalization group equation for first-quantized strings.… Expand

16 2- PDF

Measuring the equation of state of the universe: Pitfalls and prospects

- Irit Maor, R. Brustein, Joseph McMahon, P. Steinhardt
- Physics
- 21 December 2001

We explore various pitfalls and challenges in determining the equation of state $(w)$ of the dark energy component that dominates the universe and causes the current accelerated expansion. We… Expand

147 2- PDF

The Generalized Second Law of Thermodynamics in Cosmology

- R. Brustein
- Physics
- 26 April 1999

A classical and quantum mechanical generalized second law of thermodynamics in cosmology implies constraints on the effective equation of state of the universe in the form of energy conditions,… Expand

19 2- PDF

Beta Functions and S Matrix in String Theory

- R. Brustein, D. Nemeschansky, S. Yankielowicz
- Physics
- 2 May 1988

Abstract The relationship between sigma model β-functions and string theory scattering amplitudes is proved. We derive our results for the closed bosonic string using the weak field expansion around… Expand

46 2

Ratio of shear viscosity to entropy density in generalized theories of gravity

- R. Brustein, A. Medved
- Physics
- 26 August 2008

Near the horizon of a black brane solution in anti-de Sitter space, the long-wavelength fluctuations of the metric exhibit hydrodynamic behavior. For Einstein's theory, the ratio of the shear… Expand

85 2- PDF