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Physical Review D - Particles, Fields, Gravitation and Cosmology, ISSN 1550-7998, 02/2014, Volume 89, Issue 4
We focus on the evolution of curvature perturbation on superhorizon scales by adopting the spatial gradient expansion and show that the nonlinear theory,... 
GRADIENT EXPANSION APPROACH | EVOLUTION | CURVATURE PERTURBATION | ASTRONOMY & ASTROPHYSICS | PHYSICS, PARTICLES & FIELDS
Journal Article
Physical Review D - Particles, Fields, Gravitation and Cosmology, ISSN 1550-7998, 07/2015, Volume 92, Issue 2
We argue a scenario motivated by the context of string landscape, where our Universe is produced by a new vacuum bubble embedded in an old bubble and these... 
VACUUM | 1ST-ORDER PHASE-TRANSITION | INFLATION | ASTRONOMY & ASTROPHYSICS | DYNAMICS | SPECTRUM | PHYSICS, PARTICLES & FIELDS
Journal Article
Journal of Cosmology and Astroparticle Physics, ISSN 1475-7516, 06/2013, Volume 2013, Issue 6, pp. 31 - 31
Journal Article
Journal of Cosmology and Astroparticle Physics, ISSN 1475-7516, 11/2012, Volume 2012, Issue 11, pp. 36 - 36
Journal Article
Progress of theoretical physics, ISSN 0033-068X, 05/2011, Volume 125, Issue 5, pp. 1035 - 1052
We study the effects of sudden change in the sound velocity on primordial curvature perturbation spectrum in inflationary cosmology, assuming that the... 
K-INFLATION | WMAP DATA | POWER SPECTRUM | PHYSICS, MULTIDISCIPLINARY | RECONSTRUCTION | PHASE-TRANSITION | EXPANSION | INFLATIONARY UNIVERSE | QUANTUM FLUCTUATIONS | HORIZON | COSMIC INVERSION METHOD | Physics - Cosmology and Nongalactic Astrophysics
Journal Article
Journal of Cosmology and Astroparticle Physics, ISSN 1475-7516, 06/2010, Volume 2010, Issue 6, pp. 019 - 19
Journal Article
Physical Review D - Particles, Fields, Gravitation and Cosmology, ISSN 1550-7998, 02/2008, Volume 77, Issue 4
We study the emission of scalar fields into the bulk from a six-dimensional rotating black hole pierced by a 3-brane. We determine the angular eigenvalues in... 
DIMENSIONS | ASTRONOMY & ASTROPHYSICS | HIERARCHY | PHYSICS, PARTICLES & FIELDS
Journal Article
Progress of Theoretical and Experimental Physics, ISSN 2050-3911, 04/2013, Volume 2013, Issue 4
We develop a theory of nonlinear cosmological perturbations on superhorizon scales for a multicomponent scalar field with a general kinetic term and a general... 
EQUATIONS | GRADIENT EXPANSION APPROACH | PERTURBATIONS | EVOLUTION | PHYSICS, MULTIDISCIPLINARY | PHYSICS, PARTICLES & FIELDS
Journal Article
Progress of Theoretical and Experimental Physics, ISSN 2050-3911, 06/2013, Volume 2013, Issue 6, p. 63
We develop a theory of nonlinear cosmological perturbations on superhorizon scales for generic single-field inflation. Our inflation is described by the... 
EQUATIONS | GRADIENT EXPANSION APPROACH | EVOLUTION | COSMOLOGICAL PERTURBATIONS | PHYSICS, MULTIDISCIPLINARY | PHYSICS, PARTICLES & FIELDS
Journal Article
Physics Letters B, ISSN 0370-2693, 03/2007, Volume 647, Issue 1, pp. 1 - 7
We study the behaviour of five-dimensional fermions localized on branes, which we describe by domain walls, when two parallel branes collide in a... 
Brane world | Fermion localization | Collision of branes | DIMENSIONS | LOCALIZATION | MILLIMETER | COSMOLOGICAL CONSTANT | PHYSICS, MULTIDISCIPLINARY | fermion localization | brane world | collision of branes | BULK | HIERARCHY
Journal Article
Classical and Quantum Gravity, ISSN 0264-9381, 01/2008, Volume 25, Issue 1, p. 015007
We consider a six-dimensional axisymmetric Einstein-Maxwell model of warped braneworlds. The bulk is bounded by two branes, one of which is a conical 3-brane... 
STANDARD MODEL | QUANTUM SCIENCE & TECHNOLOGY | COSMOLOGICAL CONSTANT | PHYSICS, MULTIDISCIPLINARY | ASTRONOMY & ASTROPHYSICS | HIERARCHY | PHYSICS, PARTICLES & FIELDS
Journal Article
Physical Review D - Particles, Fields, Gravitation and Cosmology, ISSN 1550-7998, 2006, Volume 73, Issue 10
We study collision of two domain walls in five-dimensional asymptotically anti-de Sitter spacetime. This may provide the reheating mechanism of an ekpyrotic... 
MILLIMETER | ASTRONOMY & ASTROPHYSICS | PROBE WMAP OBSERVATIONS | DYNAMICS | LARGE EXTRA DIMENSIONS | BRANE WORLD COSMOLOGY | FLATNESS | INFLATIONARY UNIVERSE | INVERSE-SQUARE LAW | EKPYROTIC UNIVERSE | HIERARCHY | PHYSICS, PARTICLES & FIELDS
Journal Article
Physical Review D - Particles, Fields, Gravitation and Cosmology, ISSN 0556-2821, 12/2004, Volume 70, Issue 12, pp. 1 - 123514
We study particle production at the collision of two domain walls in 5-dimensional Minkowski spacetime. This may provide the reheating mechanism of an... 
MILLIMETER | COSMOLOGY | TEV | INFLATION | ASTRONOMY & ASTROPHYSICS | DYNAMICS | KINK | EKPYROTIC UNIVERSE | EXTRA DIMENSION | PHYSICS, PARTICLES & FIELDS
Journal Article
Physical Review D - Particles, Fields, Gravitation and Cosmology, ISSN 1550-7998, 02/2011, Volume 83, Issue 4
We clarify the behavior of curvature perturbations in a nonlinear theory in case the inflaton temporarily stops during inflation. We focus on the evolution of... 
EVOLUTION | COSMOLOGICAL PERTURBATIONS | FLUCTUATIONS | ASTRONOMY & ASTROPHYSICS | PHASE-TRANSITION | EXPANSION | GENERATION | INFLATIONARY UNIVERSE | PHYSICS, PARTICLES & FIELDS
Journal Article
Physical Review D - Particles, Fields, Gravitation and Cosmology, ISSN 1550-7998, 2006, Volume 74, Issue 10
The thermal equilibrium of string gas is necessary to activate the Brandenberger-Vafa mechanism, which makes our observed 4-dimensional universe enlarge.... 
SUPERSTRING COSMOLOGY | STABILIZATION | ASTRONOMY & ASTROPHYSICS | DILATON | PHYSICS, PARTICLES & FIELDS
Journal Article
Physical Review D - Particles, Fields, Gravitation and Cosmology, ISSN 1550-7998, 03/2007, Volume 75, Issue 6
We study the dynamics of colliding domain walls including self-gravity. The initial data is set up by applying a Bogomol'nyi-Prasad-Sommerfield (BPS) domain... 
UNIVERSE | ASTRONOMY & ASTROPHYSICS | PHYSICS, PARTICLES & FIELDS
Journal Article
Physical Review D (Particles, Fields, Gravitation and Cosmology), ISSN 1550-7998, 02/2014, Volume 89, Issue 4
We focus on the evolution of curvature perturbation on superhorizon scales by adopting the spatial gradient expansion and show that the nonlinear theory,... 
Perturbation methods | Mathematical analysis | Cosmology | Nonlinearity | Constants | Evolution | Sound | Formalism | Curvature
Journal Article
Physical Review D, ISSN 1550-7998, 02/2014, Volume 89, Issue 4
Journal Article
04/2018
We develop a theory of nonlinear cosmological perturbations on superhorizon scales where a characteristic length scale of perturbations is longer than the... 
Journal Article
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