25 citations · 133 across the 26 of their papers we have counts for
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Decay of baryon inhomogeneities in an expanding universe
Pratik K. Das, Sovan Sau, Abhisek Saha +1
Baryon inhomogeneities can be generated very early in the universe. These inhomogeneities then decay by particle diffusion in an expanding universe. We study the decay of these bar…
Flow and vorticity with varying chemical potential in relativistic heavy ion collisions
Abhisek Saha, Soma Sanyal
We study the vorticity patterns in relativistic heavy ion collisions with respect to the collision energy. The collision energy is related to the chemical potential used in the the…
Diffusion coefficients and constraints on hadronic inhomogeneities in the early universe
Sovan Sau, Sayantan Bhattacharya, Soma Sanyal
Hadronic inhomogeneities are formed after the quark hadron phase transition. The nature of the phase transition dictates the nature of the inhomogeneities formed. Recently some sce…
Primordial magnetic field generation in the Quark Gluon Plasma phase
Abhishek Atreya, Soma Sanyal
In this work we investigate the possibility of generation of primordial magnetic field in the early universe near the QCD phase transition epoch via the collapse of domains.…
Diffusion of massive particles around an Abelian-Higgs string
Abhisek Saha, Soma Sanyal
We study the diffusion of massive particles in the space time of an Abelian Higgs string. The particles in the early universe plasma execute Brownian motion. This motion of the par…
Particle temperature and the Chiral Vortical Effect in the early universe
Tamal K. Mukherjee, Soma Sanyal
We study the effect of hotter or colder particles on the evolution of the chiral magnetic field in the early universe. We are interested in the temperature dependent term in the ch…
Primordial Magnetic Field Via Weibel Instability In The Quark Gluon Plasma Phase
Abhishek Atreya, Soma Sanyal
The origin of the observed large scale magnetic fields in the Universe is a mystery. The seed of these magnetic fields has been attributed to physical process in the early universe…
Baryon inhomogeneities in a charged quark gluon plasma
Avijeet Ray, Soma Sanyal
We study the generation of baryon inhomogeneities in regions of the quark gluon plasma which have a charge imbalance. We find that the overdensity in the baryon lumps for positivel…
Excited hadrons as a signal for quark-gluon plasma formation
Biswanath Layek, Ajit M. Srivastava, Soma Sanyal
At the quark-hadron transition, when quarks get confined to hadrons, certain orbitally excited states, namely those which have excitation energies above the respective stat…
Neutrino inflation of baryon inhomogeneities in strong magnetic fields
Soma Sanyal
Baryon inhomogeneitites formed in the early universe are important as they affect the nucleosynthesis calculations. Since they are formed much before the nucleosynthesis epoch, neu…
Skyrmion formation in 1+1 dimensions with chemical potential
V. Sunil Kumar, Biswanath Layek, Soma Sanyal +2
Formation of topological objects during phase transitions has been discussed extensively in literature. In all these discussions defects and anti-defects form with equal probabilit…
Baryon inhomogeneity generation via cosmic strings at QCD scale and its effects on nucleosynthesis
Biswanath Layek, Soma Sanyal, Ajit M. Srivastava
We have earlier shown that cosmic strings moving through the plasma at the time of a first order quark-hadron transition in the early universe can generate large scale baryon inhom…
Effect of pre-existing baryon inhomogeneities on the dynamics of quark-hadron transition
Soma Sanyal
Baryon number inhomogeneities may be generated during the epoch when the baryon asymmetry of the universe is produced, e.g. at the electroweak phase transition. The regions with ex…
Baryogenesis via Density Fluctuations with a Second Order Electroweak Phase Transition
Biswanath Layek, Soma Sanyal, Ajit M. Srivastava
We consider the presence of cosmic string induced density fluctuations in the universe at temperatures below the electroweak phase transition temperature. Resulting temperature flu…
Formation and Collapse of False Vacuum Bubbles in Relativistic Heavy-Ion Collisions
Rajarshi Ray, Soma Sanyal, Ajit M. Srivastava
It is possible that under certain situations, in a relativistic heavy-ion collision, partons may expand out forming a shell like structure. We analyze the process of hadronization…
Cosmic string induced sheet like baryon inhomogeneities at quark-hadron transition
Biswanath Layek, Soma Sanyal, Ajit M. Srivastava
Cosmic strings moving through matter produce wakes where density is higher than the background density. We investigate the effects of such wakes occurring at the time of a first or…