Multiple soft limits of cosmological correlation functions
نویسندگان
چکیده
منابع مشابه
Newtonian Limits of the Relativistic Cosmological Perturbations
Relativistic cosmological perturbation analyses can be made based on several different fundamental gauge conditions. In the pressureless limit the variables in certain gauge conditions show the correct Newtonian behaviors. We consider the general curvature and the cosmological constant in the background medium. The perturbed density in the comoving gauge, and the perturbed velocity and the pert...
متن کاملCosmological Redshift Distortion of Correlation Functions as a Probe of the Density Parameter and the Cosmological Constant
We propose cosmological redshift-space distortion of correlation functions of galaxies and quasars as a useful probe of both the density parameter 0 and the cosmological constant 0 . In particular, we show that redshift-space distortion of quasar correlation functions at z 2 can potentially set an important constraint on the value of 0 . This is in contrast to the popular analysis of galaxy cor...
متن کاملCosmological backgroung torsion limits from Lorentz violation
Cosmological limits on Lorentz invariance breaking in Chern-Simons (3 + 1) − dimensional electrodynamics are used to place limits on torsion. Birefrigence phenomena is discussed by using extending the propagation equation to Riemann-Cartan spacetimes instead of treating it in purely Riemannian spaces. The parameter of Lorentz violation is shown to be proportional to the axial torsion vector whi...
متن کاملCosmological Limits on Slightly Skew Stresses
We present an analysis of the cosmological evolution of matter sources with small anisotropic pressures. This includes electric and magnetic fields, collisionless relativistic particles, gravitons, antisymmetric axion fields in low-energy string cosmologies, spatial curvature anisotropies, and stresses arising from simple topological defects. We calculate their evolution during the radiation an...
متن کاملSoft limits in holographic cosmology
We study the soft limits of cosmological correlators from a holographic perspective, showing how the inflationary consistency relations arise from the diffeomorphism invariance of the dual quantum field theory. Starting from the corresponding Ward identity, by taking moments we derive the leading and subleading behaviour of the stress tensor 3point function in the limit as one momentum vanishes...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Cosmology and Astroparticle Physics
سال: 2015
ISSN: 1475-7516
DOI: 10.1088/1475-7516/2015/01/012