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8 papers · 2 filters
Massive gravity and the suppression of anisotropies and gravitational waves in a matter-dominated contracting universe
Chunshan Lin, Jerome Quintin, Robert H. Brandenberger
We consider a modified gravity model with a massive graviton, but which nevertheless only propagates two gravitational degrees of freedom and which is free of ghosts. We show that…
Tunneling decay of false vortices with gravitation
Eric Dupuis, Yan Gobeil, Bum-Hoon Lee +5
We study the effect of vortices on the tunneling decay of a symmetry-breaking false vacuum in three spacetime dimensions with gravity. The scenario considered is one in which the i…
Pole inflation in Jordan frame supergravity
Ken'ichi Saikawa, Masahide Yamaguchi, Yasuho Yamashita +1
We investigate inflation models in Jordan frame supergravity, in which an inflaton non-minimally couples to the scalar curvature. By imposing the condition that an inflaton would h…
Noncommutative scalar fields in compact spaces: quantisation and implications
Mir Mehedi Faruk, Mishkat Al Alvi, Wasif Ahmed +2
In this paper we consider a two component scalar field theory, with noncommutativity in its conjugate momentum space. We quantize such a theory in a compact space with the help of…
Running of the Spectrum of Cosmological Perturbations in String Gas Cosmology
Robert Brandenberger, Guilherme Franzmann, Qiuyue Liang
We compute the running of the spectrum of cosmological perturbations in String Gas Cosmology, making use of a smooth parametrization of the transition between the early Hagedorn ph…
Delocalized SYZ Mirrors and Confronting Top-Down -Structure Holographic Meson Masses at Finite and with P(article) D(ata) G(roup) Values
Vikas Yadav, Aalok Misra, Karunava Sil
Meson spectroscopy at finite gauge coupling - whereat any perturbative QCD computation would break down - and finite number of colors, from a top-down holographic string model, has…