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Cold Dark Matter Isocurvature Perturbations: Cosmological Constraints and Applications
Hong Li, Jie Liu, Jun-Qing Xia +1
In this paper we present the constraints on cold dark matter (CDM) isocurvature contributions to the cosmological perturbations. By employing Markov Chain Monte Carlo method (MCMC)…
Warm DBI Inflation
Yi-Fu Cai, James B. Dent, Damien A. Easson
We propose a warm inflationary model in the context of relativistic D-brane inflation in a warped throat, which has Dirac-Born-Infeld (DBI) kinetic term and is coupled to radiation…
Inflation in Entropic Cosmology: Primordial Perturbations and non-Gaussianities
Yi-Fu Cai, Emmanuel N. Saridakis
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 equilibri…
Evidences for bouncing evolution before inflation in cosmological surveys
Jie Liu, Yi-Fu Cai, Hong Li
Inflationary cosmology with a preceding nonsingular bounce can lead to changes on the primordial density fluctuations. One significant prediction is that the amplitude of the power…
Black holes in an asymptotically safe gravity theory with higher derivatives
Yi-Fu Cai, Damien A. Easson
We present a class of spherically symmetric vacuum solutions to an asymptotically safe theory of gravity containing high-derivative terms. We find quantum corrected Schwarzschild-(…
Minimal Gaugomaly Mediation
Yi Cai, Markus A. Luty
Mixed anomaly and gauge mediation ("gaugomaly'' mediation) gives a natural solution to the SUSY flavor problem with a conventional LSP dark matter candidate. We present a minimal v…