Holography of Charged Dilaton Black Holes (2009)
Goldstein, Kevin, Kachru, Shamit, Prakash, Shiroman, Trivedi, Sandip P.
We study charged dilaton black branes in $AdS_4$. Our system involves a dilaton $\phi$ coupled to a Maxwell field $F_{\mu\nu}$ with dilaton-dependent gauge coupling, ${1\over g^2} = f^2(\phi)$....
Goldstein, Kevin, Katmadas, Stefanos
We study non-BPS black hole solutions to ungauged supergravity with 8 supercharges coupled to vector multiplets in four and five dimensions. We identify a large class of five dimensional non-BPS...
A note on non-linear electrodynamics, regular black holes and the entropy function (2007)
Goldstein, Kevin, Yavartanoo, Hossein
We examine four dimensional magnetically charged extremal black holes in certain non-linear U(1) gauge theories coupled to two derivative gravity. For a given coupling, one can tune the magnetic...
One entropy function to rule them all (2007)
Goldstein, Kevin, Jena, Rudra P.
We study the entropy of extremal four dimensional black holes and five dimensional black holes and black rings is a unified framework using Sen's entropy function and dimensional reduction. The five...
Moduli and (un)attractor black hole thermodynamics (2006)
Astefanesei, Dumitru, Goldstein, Kevin, Mahapatra, Swapna
We investigate four-dimensional spherically symmetric black hole solutions in gravity theories with massless, neutral scalars non-minimally coupled to gauge fields. In the non-extremal case, we...
Astefanesei, Dumitru, Goldstein, Kevin, Jena, Rudra P., Sen, Ashoke, Trivedi, Sandip P.
We prove that, in a general higher derivative theory of gravity coupled to abelian gauge fields and neutral scalar fields, the entropy and the near horizon background of a rotating extremal black...
A C-Function For Non-Supersymmetric Attractors (2005)
Goldstein, Kevin, Jena, Rudra P., Mandal, Gautam, Trivedi, Sandip P.
We present a c-function for spherically symmetric, static and asymptotically flat solutions in theories of four-dimensional gravity coupled to gauge fields and moduli. The c-function is valid for...
Non-Supersymmetric Attractors (2005)
Goldstein, Kevin, Iizuka, Norihiro, Jena, Rudra P., Trivedi, Sandip P.
We consider theories with gravity, gauge fields and scalars in four-dimensional asymptotically flat space-time. By studying the equations of motion directly we show that the attractor mechanism can...
De Sitter space, interacting quantum field theory and alpha vacua / (2005)
Thesis (Ph.D.)--Brown University, 2005.
Global Multilateral Environmental Agreements and Small Island Developing States (2004)
Loper, Christen E., Tesch, Danielle M., Goldstein, Kevin, Torres De Noronha, Isabel
This paper identifies and analyzes multilateral environmen-tal agreements (MEAs) relevant to small island developing States (SIDS), particularly those related to ocean and coastal issues, as well as...
Real-Time Perturbation Theory in de Sitter Space (2003)
Goldstein, Kevin, Lowe, David A.
We consider scalar field theory in de Sitter space with a general vacuum invariant under the continuously connected symmetries of the de Sitter group. We begin by reviewing approaches to define this...
Ultra High Energy Cosmic Rays and de Sitter Vacua (2003)
Alberghi, Gian Luigi, Goldstein, Kevin, Lowe, David A.
The production of ultra high-energy cosmic rays in de Sitter invariant vacuum states is considered. Assuming the present-day universe is asymptoting toward a future de Sitter phase, we argue the...
A note on alpha-vacua and interacting field theory in de Sitter space (2003)
Goldstein, Kevin, Lowe, David A.
We set up a consistent renormalizable perturbation theory of a scalar field in a nontrivial alpha vacuum in de Sitter space. Although one representation of the effective action involves non-local...
Initial state effects on the cosmic microwave background and trans-planckian physics (2002)
Goldstein, Kevin, Lowe, David A.
There exist a one complex parameter family of de Sitter invariant vacua, known as alpha vacua. In the context of slow roll inflation, we show that all but the Bunch-Davies vacuum generates...
Stacking non-BPS D-Branes (2001)
Alberghi, Gian Luigi, Caceres, Elena, Goldstein, Kevin, Lowe, David A.
We present a candidate supergravity solution for a stacked configuration of stable non-BPS D-branes in Type II string theory compactified on T^4/Z_2. This gives a supergravity description of...