Results 31 to 40 of about 23,762 (159)

GLIMPSES INTO THE EARLY UNIVERSE [PDF]

XVIth International Congress on Mathematical Physics, 2010
Invited talk at the XVI International Congress on Mathematical Physics, Prague, 3-8 August 2009; 6 ...
openaire   +2 more sources

Large primordial fluctuations in gravitational waves from phase transitions

Journal of High Energy Physics, 2023
It is well-known that first-order phase transitions in the early universe can be a powerful source of observable stochastic gravitational wave backgrounds.
Arushi Bodas, Raman Sundrum
doaj   +1 more source

Precision early universe cosmology from stochastic gravitational waves

Journal of High Energy Physics, 2022
The causal tail of stochastic gravitational waves can be used to probe the energy density in free streaming relativistic species as well as measure g * (T) and beta functions β(T) as a function of temperature.
Dawid Brzeminski, Anson Hook, Gustavo Marques-Tavares   +2 more
doaj   +1 more source

Correction: Gorban et al. The Asymmetric Dynamical Casimir Effect. Physics 2023, 5, 398–422

Physics
There was an error in the original paper [1], which occurred in the calculation of the DCE spectrum from the time-dependant perturbations on λ(t) [...]
Matthew J. Gorban, William D. Julius, Patrick M. Brown, Jacob A. Matulevich, Gerald B. Cleaver   +4 more
doaj   +1 more source

First- and Second-Order Forces in the Asymmetric Dynamical Casimir Effect for a Single δ − δ^′ Mirror

Physics
Here, we consider an asymmetric δ−δ′ mirror undergoing time-dependent interactions with a massless scalar field in 1 + 1 dimensions. Using fluctuation-dissipation theory for a mirror in vacuum, we compute the force on a moving δ−δ′ mirror with time ...
Matthew J. Gorban, William D. Julius, Patrick M. Brown, Jacob A. Matulevich, Ramesh Radhakrishnan, Gerald B. Cleaver   +5 more
doaj   +1 more source

Holographic Renormalization in Dense Medium

Advances in High Energy Physics, 2014
The holographic renormalization of a charged black brane with or without a dilaton field, whose dual field theory describes a dense medium at finite temperature, is investigated in this paper.
Chanyong Park
doaj   +1 more source

On the violent preheating in the mixed Higgs-R2 inflationary model

Physics Letters B, 2019
It has been argued that the mixed Higgs-R2 model acts as the UV extension of the Higgs inflation, pushing up its cut-off scale in the vacuum close up to the Planck scale.
Minxi He, Ryusuke Jinno, Kohei Kamada, Seong Chan Park, Alexei A. Starobinsky, Jun'ichi Yokoyama   +5 more
doaj   +1 more source

Notes on the Holographic Lifshitz Theory

Advances in High Energy Physics, 2014
On the Lifshitz black brane geometry of an Einstein-Maxwell-dilaton gravity, we holographically investigate electric DC conductivities and the role of impurity in a nonrelativistic Lifshitz medium with two different charge carriers, impurity and Lifshitz
Chanyong Park
doaj   +1 more source

Probing primordial black holes from a first order phase transition through pulsar timing and gravitational wave signals

Journal of High Energy Physics, 2023
In this work, we assess the sensitivity reach of pulsar timing array (PTA) measurements to probe pointlike primordial black holes (PBHs), with an extended mass distribution, which originate from collapsed Fermi balls that are formed through the ...
Jan Tristram Acuña, Po-Yan Tseng
doaj   +1 more source

Creation of an inflationary universe out of a black hole

Physics Letters B, 2018
We discuss a two-step mechanism to create a new inflationary domain beyond a wormhole throat which is created by a phase transition around an evaporating black hole.
Naritaka Oshita, Jun'ichi Yokoyama
doaj   +1 more source