Showing 2016 · hep-thShow all

12 papers · 2 filters

hep-th2016★ 20 cited

Cosmological Constant Problem and Renormalized Vacuum Energy Density in Curved Background

Kazunori Kohri, Hiroki Matsui

The current vacuum energy density observed as dark energy is unacceptably small compared with any other scales. Therefore…

hep-th2016★ 26 cited

O() Invariance of the Multi-Field Bounce

Kfir Blum, Masazumi Honda, Ryosuke Sato +2

In his 1977 paper on vacuum decay in field theory: The Fate of the False Vacuum, Coleman considered the problem of a single scalar field and assumed that the minimum action tunnell…

hep-th2016★ 13 cited

Quantum radiation produced by the entanglement of quantum fields

Satoshi Iso, Naritaka Oshita, Rumi Tatsukawa +2

We investigate the quantum radiation produced by an Unruh-De Witt detector in a uniformly accelerating motion coupled to the vacuum fluctuations. Quantum radiation is nonvanishing,…

hep-th2016★ 9 cited

Contravariant Gravity on Poisson Manifolds and Einstein Gravity

Yukio Kaneko, Hisayoshi Muraki, Satoshi Watamura

A relation between gravity on Poisson manifolds proposed in arXiv:1508.05706 and Einstein gravity is investigated. The compatibility of the Poisson and Riemann structures defines a…

hep-th2016★ 38 cited

Meaning of the field dependence of the renormalization scale in Higgs inflation

Yuta Hamada, Hikaru Kawai, Yukari Nakanishi +1

We consider the prescription dependence of the Higgs effective potential under the presence of general nonminimal couplings. We evaluate the fermion loop correction to the effectiv…

hep-th2016★ 1 cited

Effective Lagrangian in de Sitter Spacetime

Hiroyuki Kitamoto, Yoshihisa Kitazawa

Scale invariant fluctuations of metric are universal feature of quantum gravity in de Sitter spacetime. We construct an effective Lagrangian which summarizes their implications on…

hep-th2016★ 7 cited

Entanglement entropy for pure gauge theories in 1+1 dimensions using the lattice regularization

Sinya Aoki, Etsuko Itou, Keitaro Nagata

We study the entanglement entropy (EE) for pure gauge theories in 1+1 dimensions with the lattice regularization. Using the definition of the EE for lattice gauge theories proposed…

hep-th2016

Note on three-generation models in heterotic string and F-theory on elliptic Calabi-Yau manifolds over Hirzebruch varieties

Shun'ya Mizoguchi, Tomoki Sakaguchi

We give a complete list of a class of three-generation models in E8 x E8 heterotic string theory and its dual F-theory on an elliptic Calabi-Yau over a (generalized) Hirzebruch var…

hep-th2016★ 5 cited

Spectrum in the presence of brane-localized mass on torus extra dimensions

Yutaka Sakamura

The lightest mass eigenvalue of a six-dimensional theory compactified on a torus is numerically evaluated in the presence of the brane-localized mass term. The dependence on the cu…

hep-th2016★ 2 cited

On Dimensional Reduction of Magical Supergravity Theories

Naoto Kan, Shun'ya Mizoguchi

We prove, by a direct dimensional reduction and an explicit construction of the group manifold, that the nonlinear sigma model of the dimensionally reduced three-dimensional A = R…

hep-th2016★ 27 cited

Numerical tests of the gauge/gravity duality conjecture for D0-branes at finite temperature and finite N

Masanori Hanada, Yoshifumi Hyakutake, Goro Ishiki +1

According to the gauge/gravity duality conjecture, the thermodynamics of gauge theory describing D-branes corresponds to that of black branes in superstring theory. We test this co…

hep-th2016★ 67 cited

Hydro-elastic Complementarity in Black Branes at large D

Roberto Emparan, Keisuke Izumi, Raimon Luna +2

We obtain the effective theory for the non-linear dynamics of black branes---both neutral and charged, in asymptotically flat or Anti-deSitter spacetimes---to leading order in the…