搜索结果: 1-15 共查到“理论物理学 Inflation”相关记录20条 . 查询时间(0.109 秒)
An Effective Theory of Initial Conditions in Inflation
The new physics cosmic microwave radiation power spectrum
2014/12/20
We examine the renormalization of an effective theory description of a general initial state set in an isotropically expanding space-time, which is done to understand how to include the effects of new...
Nonisotropy in the CMB power spectrum in single field inflation
Inflation the space gradient field the initial value the radiation power spectrum
2014/12/19
Contaldi et al. [C. R. Contaldi, M. Peloso, L. Kofman, and A. Linde, J. Cosmol. Astropart. Phys. 07 (2003) 002] have suggested that an initial period of kinetic energy domination in single field...
Galilean symmetry in the effective theory of inflation: new shapes of non-Gaussianity
Galilean symmetry effective theory inflation
2010/12/23
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...
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...
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...
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).
Galilean symmetry in the effective theory of inflation: new shapes of non-Gaussianity
Galilean symmetry effective theory of inflation shapes of non-Gaussianity
2010/12/21
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...
Inflation of Bianchi type-$\Rmnum{7}_0$ Universe with Dirac Field in Einstein-Cartan theory
Einstein-Cartan theory Bianchi type-V II0 inflation Dirac field
2010/12/21
We discuss the Bianchi type-V II0 cosmology with Dirac field in Einstein-Cartan the-ory. We obtain the equations of Dirac field and gravitational field in Einstein-Cartan theory. We find a Bianchi typ...
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.
We find the natural embedding of the (R + R2)-inflationary model into the recently constructed
F(R) supergravity. It gives a simple and viable realization of chaotic inflation in supergravity. The on...
Present treatments of eternal in ation regulate in nities by imposing a geometric cuto . We point out that some matter systems reach the cuto in nite time. This implies a nonzero probability for a n...
On the one hand, inflation is an extremely convincing scenario: it solves most cosmological paradoxes and generates fluctuations that became the seeds for the growth of structures. It, however,suffers...
Non-archimedean quantum cosmology and tachyonic inflation
Non-archimedean quantum cosmology tachyonic inflation
2010/12/20
We review the relevance of quantum rolling tachyons and corresponding inflation scenario in the frame of the standard, p-adic and adelic minisuperspace quantum cosmology.