When can preheating affect the CMB?
نویسندگان
چکیده
منابع مشابه
When Can Finite Testing Ensure Infinite Trustworthiness?
In this paper we contribute to the general philosophical question as to whether empirical testing can ever prove a physical law. Problems that lead to this question arise under several contexts, and the matter has been addressed by the likes of Bayes and Laplace. After pointing out that a Bayesian approach is the proper way to address this problem, we show that the answ...
متن کاملCan topological defects be formed during preheating ?
We study the dynamics of a scalar field Φ with potential g(|Φ|− η)/2 (g: self-coupling constant, η: symmetry breaking scale) after inflation and make clear whether topological defects can ever be formed during preheating. In particular, we pay attention to the GUT defects (η ∼ 10GeV − 10GeV), and consider three types of fluctuations. The first one is produced due to parametric resonance, the se...
متن کاملWhen Can We Lift the Coronavirus Pandemic Restrictions? Not Before Taking These Steps
When Can We Lift the Coronavirus Pandemic Restrictions? Not Before Taking These Steps. The American Enterprise Institute, a public policy think tank, recently released a report co-written by former U.S. Food and Drug Administration commissioner Scott Gottlieb that offers a four-phase “road map to reopening.” The first phase involves slowing the spread of new infections with physical distancing ...
متن کاملwhen can we release the amplatzer ductal occluder (ado) safely?
background: the ductus arteriosus connects the main pulmonary trunk to the descending aorta. the incidence of isolated patent ductus arteriosus (pda) in full-term infants is about 1 in 2000. the amplatzer ductal occluder (ado) is recommended for pdas with sizes larger than 2 mm. in this procedure, we must confirm the ado position in pda by aortogram from the arterial line. the purpose of this s...
متن کاملDoes gravitational time delay perturbation affect CMB acoustic scale anisotropy ?
In this paper we specifically studied one aspect of foreground primordial matter density perturbations: the relative gravitational time delay between a pair of light paths converging towards an observer and originating from two points on the last scattering surface separated by the physical scale of an acoustic oscillation. It is found that in principle time delay biases the size of acoustic os...
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: Physics Letters B
سال: 2002
ISSN: 0370-2693
DOI: 10.1016/s0370-2693(02)01813-0