Results 21 to 30 of about 87,708 (328)

First Order Phase Transitions in a Bianchi type-I universe [PDF]

open access: yes, 2000
Considering the theory of induced gravity coupled to matter fields, taking the $\phi ^6$ interaction potential model we evaluate the one-loop effective potential in a (3+1)dimensional Bianchi type-I spacetime.
Joy, Minu, Kuriakose, V. C.
core   +3 more sources

First-Order Phase Transitions in an Early-Universe Environment [PDF]

open access: yes, 2000
In first-order phase transitions in the early universe, the bubble wall is expected to be significantly slowed-down by its interaction with the surrounding plasma.
Lilley, Matthew
core   +3 more sources

Multi-brane cosmology

open access: yesJournal of High Energy Physics, 2023
5D warped extra dimension models with multiple 3-branes can naturally realize multiple hierarchical mass scales which are ubiquitous in physics beyond the Standard Model.
Sudhakantha Girmohanta   +3 more
doaj   +1 more source

Phase Transitions in the Universe [PDF]

open access: yes, 1998
During the past two decades, cosmologists turned to particle physics in order to explore the physics of the very early Universe. The main link between the physics of the smallest and largest structures in the Universe is the idea of spontaneous symmetry ...
Gleiser, Marcelo
core   +2 more sources

Finite-Size Effects on Nucleation in a First-Order Phase Transition [PDF]

open access: yes, 2003
We discuss finite-size effects on homogeneous nucleation in first-order phase transitions. We study their implications for cosmological phase transitions and to the hadronization of a quark-gluon plasma generated in high-energy heavy ion collisions. Very
Fraga, Eduardo S., Venugopalan, Raju
core   +2 more sources

Inflationary Gravitational Waves and the Evolution of the Early Universe [PDF]

open access: yes, 2013
We study the effects of various phenomena which may have happened in the early universe on the spectrum of inflationary gravitational waves. The phenomena include phase transitions, entropy productions from non-relativistic matter, the production of dark
Jinno, Ryusuke   +2 more
core   +1 more source

Boosted dark matter from primordial black holes produced in a first-order phase transition

open access: yesJournal of High Energy Physics, 2023
During a cosmological first-order phase transition in a dark sector, fermion dark matter particles χ can form macroscopic Fermi balls that collapse to primordial black holes (PBHs) under certain conditions.
Danny Marfatia, Po-Yan Tseng
doaj   +1 more source

Phase transitions in the early universe

open access: yes, 2023
Phase transitions are a generic prediction of models in particle physics. In the Standard Model, for example, there are two phase transitions: the QCD confinement transition and the electroweak phase transition, both occurring in the very early stages of the universe. Many extensions to the Standard Model predict new phase transitions, all occurring at
openaire   +2 more sources

SUPERCOOLING AND NUCLEATION IN PHASE TRANSITIONS OF THE EARLY UNIVERSE [PDF]

open access: yesModern Physics Letters A, 1996
The three phase transitions (the GUT, the electroweak and the quark-hadron), which the universe is assumed to have undergone, produce very important physical effects if they are assumed to be of first-order. It is also important that enough supercooling is produced at these transitions so that the rate of nucleation of the lower temperature phase out ...
Banerjee, B., Gavai, R. V.
openaire   +2 more sources

Topological String Defect Formation During the Chiral Phase Transition [PDF]

open access: yes, 2001
We extend and generalize the seminal work of Brandenberger, Huang and Zhang on the formation of strings during chiral phase transitions(berger) and discuss the formation of abelian and non-abelian topological strings during such transitions in the early ...
A. P. BALACHANDRAN   +9 more
core   +5 more sources

Home - About - Disclaimer - Privacy