搜索结果: 46-60 共查到“理学 Inflation”相关记录99条 . 查询时间(0.125 秒)
The gravitino problem in supersymmetric warm inflation
The gravitino problem supersymmetric warm inflation
2010/12/27
The warm inflation paradigm considers the continuous production of radiation during inflation due to dissipative effects. In its strong dissipation limit, warm inflation gives way to a radiation domin...
Noncommutative geometry can provide effective description of physics at very short distances taking into account generic effects of quantum gravity. Inflation amplifies tiny quantum fluctuations in t...
Non-Gaussianities in Multifield Inflation: Superhorizon Evolution, Adiabaticity, and the Fate of fnl
Non-Gaussianities in Multifield Inflation Superhorizon Evolution Adiabaticity Fate of fnl
2010/12/21
We explore the superhorizon generation of large fNL of the local form in two eld in
ation.We calculate the two- and three-point observables in a general class of potentials which allow for an analyt...
The gravitino problem in supersymmetric warm inflation
gravitino problem supersymmetric warm inflation
2010/11/16
The warm inflation paradigm considers the continuous production of radiation during inflation
due to dissipative effects. In its strong dissipation limit, warm inflation gives way to a radiation domi...
Enhanced Inflation in the Dirac-Born-Infeld framework
brane inflation DBI theory form invariance symmetry
2010/11/15
We consider the Einstein equations within the DBI scenario for a spatially flat Friedmann-
Robertson-Walker (FRW) spacetime without a cosmological constant. We derive the inflationary
scenario by ap...
Galilean symmetry in the effective theory of inflation: new shapes of non-Gaussianity
effective theory of inflation new shapes of non-Gaussianity
2010/11/16
We study the consequences of imposing an approximate Galilean symmetry on the Effective Theory
of Inflation, the theory of small perturbations around the inflationary background. This approach allows...
Optimizing future experimental probes of inflation
Optimizing future experimental probes of inflation
2010/11/9
The discovery of many novel realizations of the in ationary universe paradigm has led to a degeneracy problem: many di erent in ationary Lagrangians generate the same perturbation spectra.Resolving th...
The inflationary paradigm has enjoyed phenomenological success, however, a compelling particle
physics realization is still lacking. The key obstruction is that the requirement of a suitably flat sca...
Inflation in Entropic Cosmology: Primordial Perturbations and non-Gaussianities
Inflation Primordial Perturbations non-Gaussianities
2010/11/16
We investigate thermal inflation in double-screen entropic cosmology. We find that its realization is general, resulting from the system evolution from non-equilibrium to equilibrium. Furthermore,goin...
Remarks on Higgs Inflation
Remarks Higgs Inflation
2010/12/21
We discuss models where the Higgs boson of the electroweak standard model plays the role of the inflaton. We focus on the question of the violation of perturbative unitarity due to the coupling of the...
CMB statistics in noncommutative inflation
Cosmological inflation Statistical anisotropy of the cosmic microwave background Scale-dependent non-Gaussianity
2010/11/12
Noncommutative geometry can provide effective description of physics at very short distances taking into account generic effects of quantum gravity. Inflation amplifies tiny quantum fluctuations in th...
Warm DBI Inflation
Warm DBI Inflation
2010/12/21
We propose a warm inflationary model in the context of relativistic D-brane inflation in a warped throat. The inflaton has Dirac-Born-Infeld (DBI) kinetic term and is coupled to radiation through a di...
Mutated hybrid inflation in $f(R,{\Box}R)$-gravity
Mutated hybrid inflation $f(R,{\Box}R)$-gravity
2010/12/21
A new hybrid inflationary scenario in the context of f(R,R)-gravity is proposed. Demanding
the waterfall field to ‘support the potential from below’ [unlike the original proposal by Stewart in Phys....
On the measure problem in slow roll inflation and loop quantum cosmology
measure problem slow roll inflation loop quantum cosmology
2010/12/20
We consider the measure problem in standard slow-roll in ationary models from the perspective
of loop quantum cosmology (LQC).
Imprints of Anisotropic Inflation on the CMB
cosmology inflation – cosmic background radiation
2010/12/21
We study the imprints of anisotropic inflation on the CMB temperature fluctuations and polarizations. The statistical anisotropy stems not only from the direction de-pendence of curvature and tensor p...