Showing 2006 · hep-thShow all

15 papers · 2 filters

hep-th2006★ 1 cited

Mach's Holographic Principle

Justin Khoury, Maulik Parikh

Mach's principle is the concept that inertial frames are determined by matter. We propose and implement a precise formulation of Mach's principle in which matter and geometry are i…

hep-th2006★ 48 cited

Nonextremal black holes are BPS

Christopher M. Miller, Koenraad Schalm, Erick J. Weinberg

Extremal charged black holes are BPS solutions. It is commonly thought that their nonextremal counterparts are not. Further, experience with BPS solutions in flat spacetime suggest…

hep-th2006★ 36 cited

Hawking-Moss bounces and vacuum decay rates

Erick J. Weinberg

The conventional interpretation of the Hawking-Moss (HM) solution implies a transition rate between vacua that depends only on the values of the potential in the initial vacuum and…

hep-th2006★ 50 cited

Transitions Between de Sitter Minima

Puneet Batra, Matthew Kleban

We investigate the cosmological signatures of instantons mediating tunneling between de Sitter minima. For generic potentials the Coleman-de Luccia instanton does not necessarily e…

hep-th2006★ 182 cited

Local bulk operators in AdS/CFT: A holographic description of the black hole interior

Alex Hamilton, Daniel Kabat, Gilad Lifschytz +1

To gain insight into how bulk locality emerges from the holographic conformal field theory, we reformulate the bulk to boundary map in as local a way as possible. In previous work,…

hep-th2006★ 4 cited

Exact spectrum of scalar field perturbations in a radiation deformed closed de Sitter universe

Sash Sarangi, Koenraad Schalm, Gary Shiu +1

We observe that the equation of motion for a free scalar field in a closed universe with radiation and a positive cosmological constant is given by Lamé's equation. Computing the e…

hep-th2006★ 12 cited

Vacuum Sampling in the Landscape during Inflation

Hooman Davoudiasl, Sash Sarangi, Gary Shiu

We consider the phenomenological consequences of sampling multiple vacua during inflation motivated by an enormous landscape. A generic consequence of this sampling is the formatio…

hep-th2006★ 29 cited

Cosmology of the Tachyon in Brane Inflation

Louis Leblond, Sarah Shandera

In certain implementations of the brane inflationary paradigm, the exit from inflation occurs when the branes annihilate through tachyon condensation. We investigate various cosmol…

hep-th2006★ 18 cited

Giant Gravitons on Deformed pp-waves

Alex Hamilton, Jeff Murugan

The recently constructed Lunin-Maldacena deformation of is known to support two inequivalent Penrose limits that lead to BPS pp-wave geometries. In this note,…

hep-th2006★ 144 cited

Magnetic Monopole Dynamics, Supersymmetry, and Duality

Erick J. Weinberg, Piljin Yi

We review the properties of BPS, or supersymmetric, magnetic monopoles, with an emphasis on their low-energy dynamics and their classical and quantum bound states. After an overvie…

hep-th2006★ 42 cited

Is Brane Inflation Eternal?

Xingang Chen, Sash Sarangi, S. -H. Henry Tye +1

In this paper, we show that eternal inflation of the random walk type is generically absent in the brane inflationary scenario. Depending on how the brane inflationary universe ori…

hep-th2006★ 45 cited

Cosmic Perturbations Through the Cyclic Ages

Joel K. Erickson, Steven Gratton, Paul J. Steinhardt +1

We analyze the evolution of cosmological perturbations in the cyclic model, paying particular attention to their behavior and interplay over multiple cycles. Our key results are: (…

hep-th2006★ 529 cited

Holographic representation of local bulk operators

Alex Hamilton, Daniel Kabat, Gilad Lifschytz +1

The Lorentzian AdS/CFT correspondence implies a map between local operators in supergravity and non-local operators in the CFT. By explicit computation we construct CFT operators w…

hep-th2006★ 978 cited

Observational Signatures and Non-Gaussianities of General Single Field Inflation

Xingang Chen, Min-xin Huang, Shamit Kachru +1

We perform a general study of primordial scalar non-Gaussianities in single field inflationary models in Einstein gravity. We consider models where the inflaton Lagrangian is an ar…

hep-th2006★ 71 cited

Heating in Brane Inflation and Hidden Dark Matter

Xingang Chen, S. -H. Henry Tye

Towards the end of brane inflation, the brane pair annihilation produces massive closed strings. The transfer of this energy to Standard Model (SM) open string modes depends on whe…