A5046296491- High-Energy Particle Collisions Research
- Quantum Chromodynamics and Particle Interactions
- Pulsars and Gravitational Waves Research
- Particle physics theoretical and experimental studies
- Quantum, superfluid, helium dynamics
- Superconducting Materials and Applications
- Cosmology and Gravitation Theories
- Thermal properties of materials
- Physics of Superconductivity and Magnetism
- Cold Atom Physics and Bose-Einstein Condensates
- Spacecraft and Cryogenic Technologies
- Water Quality Monitoring Technologies
- Advanced MEMS and NEMS Technologies
- Methane Hydrates and Related Phenomena
- Advanced Synthetic Organic Chemistry
- Synthetic Organic Chemistry Methods
- Phase-change materials and chalcogenides
- Semiconductor Quantum Structures and Devices
- Laser Material Processing Techniques
- Granular flow and fluidized beds
- Cancer Treatment and Pharmacology
- Atomic and Subatomic Physics Research
- Flow Measurement and Analysis
- Laser-Matter Interactions and Applications
- Mechanical and Optical Resonators
Variable Energy Cyclotron Centre
2019-2025
Homi Bhabha National Institute
2020-2025
Saha Institute of Nuclear Physics
2023
General Electric (United States)
2015
Laser Science & Technology Centre
1982
Solid State Physics Laboratory
1969-1974
Employing a field dependent three-momentum cutoff regularization technique, we study the phase structure and mesonic masses using 2-flavor Nambu--Jona Lasinio model at finite temperature density in presence of an arbitrary external magnetic field. This approach is then applied to incorporate effects anomalous moment (AMM) quarks on constituent quark mass thermodynamic observables as function temperature/baryonic density. The critical for transition from chiral symmetry broken restored...
Dilepton production rate (DPR) from hot and dense quark matter is studied in the presence of an arbitrary external magnetic field using 2-flavour Nambu--Jona-Lasinio (NJL) model. The anomalous moment (AMM) quarks taken into consideration while calculating constituent mass as well DPR thermo-magnetic medium. An infinite number Landau levels incorporated so that no approximations are made on strength background field. analytic structure two point vector current correlation function complex...
In this article, there are 18 sections discussing various current topics in the field of relativistic heavy-ion collisions and related phenomena, which will serve as a snapshot state art. Section 1 reviews experimental results some recent light-flavored particle production data from ALICE collaboration. Other mostly theoretical nature. Very strong but transient magnetic created could have important observational consequences. This has generated lot activity last decade. Sections 2, 7, 9, 10...
Dilepton production from hot, dense and magnetized quark matter is studied using the three-flavor Polyakov loop extended Nambu--Jona-Lasinio (PNJL) model in which anomalous magnetic moment (AMM) of quarks also taken into consideration. This done by first evaluating thermo-magnetic spectral function vector current correlator employing real time formalism finite temperature field theory Schwinger proper formalism. The constituent mass goes as an input expression dilepton rate (DPR), has been...
We investigate magnetic field $(eB)$ dependence of constituent quark mass, the longitudinal and transverse pressure as well magnetization susceptibility strongly interacting matter. employ two-flavor Polyakov Nambu--Jona-Lasinio model with inclusion anomalous moment (AMM) quarks at finite temperature ($T$) chemical potential $({\ensuremath{\mu}}_{q})$ capturing different stages chiral phase transition. find that pressure, magnetization, become highly oscillatory for large values $eB$ in...
The shear <a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"><a:mi>η</a:mi></a:math> and bulk <c:math xmlns:c="http://www.w3.org/1998/Math/MathML" display="inline"><c:mi>ζ</c:mi></c:math> viscous coefficients have been calculated in a hot chirally asymmetric quark matter quantified terms of chiral chemical potential (CCP) using the two-flavor Nambu-Jona–Lasinio (NJL) model. This is done by employing one-loop Green-Kubo formalism where extracted from long-wavelength limit...
In this work the neutral meson properties have been investigated in presence of thermo-magnetic background using two-flavor Nambu--Jona-Lasinio model. Mass, spectral function and dispersion relations are obtained scalar ($\sigma$) pseudo-scalar ($\pi^0$) channels as well vector ($\rho^0$) axial ($a^0_1$) channels. The general Lorentz structures for axial-vector polarization functions considered detail. ultra-violet divergences appearing regularized a mixed regularization technique where...
The electrical and Hall conductivities in a uniform magnetic field are evaluated for an interacting pion gas using the kinetic theory approach within ambit of relaxation time approximation (RTA). in-medium cross sections vis-a-vis $\pi\pi$ scattering obtained one-loop modified thermal propagator exchanged $\rho$ $\sigma$ mesons theoretic techniques. For higher values field, monotonic increase conductivity with temperature is observed. However, given found to decrease steadily field....
The effective photon-quark-antiquark ($\ensuremath{\gamma}q\overline{q}$) vertex function is evaluated at finite temperature in the presence of an arbitrary external magnetic field using two-flavor gauged Nambu--Jona-Lasinio model mean approximation. lowest order diagram contributing to form factor and anomalous moment (AMM) quarks calculated imaginary time formalism theory Schwinger proper formalism. propagator, including all Landau levels with nonzero AMM dressed quarks, considered while...
The rate of dilepton emission from a magnetized hot hadronic medium is calculated in the framework real time formalism finite temperature field theory. We evaluate one loop self-energy neutral rho-meson containing thermo-magnetic propagators for charged pions loop. in-medium spectral function rho obtained by solving Dyson-Schwinger equation shown to be proportional production rate. study analytic structure such shows that addition usual contribution coming Unitary cut beyond two-pion...
Abstract The electrical conductivity of hot and dense quark matter is calculated using the 2-flavour gauged Nambu–Jona–Lasinio (NJL) model in presence a chiral imbalance quantified terms chemical potential (CCP). To this end, in-medium spectral function corresponding to vector current correlator evaluated employing real time formulation finite temperature field theory. Taking long wavelength limit we extract Green–Kubo relation. thermal widths quarks/antiquarks that appear expression are by...
The thermal conductivities of gallium arsenide single crystals doped with tellurium and chromium have been measured from 2 to 90\ifmmode^\circ\else\textdegree\fi{}K. tellurium-doped crystal shows normal behavior in agreement the findings other workers. At low temperatures, conductivity this follows a ${T}^{3}$ indicative boundary scattering limiting phonon mean free path. path temperature region, calculated experimental results, agrees fairly well that obtained Casimir's formula....
We explore the properties of neutral mesons within context a chirally imbalanced medium, employing two-flavor Nambu–Jona-Lasinio model. The temperature dependence constituent quark mass at finite values chiral chemical potential (CCP) demonstrates well-established phenomena catalysis lower temperatures and inverse higher temperatures. polarization functions in both scalar (<a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"><a:mi>σ</a:mi></a:math>) pseudoscalar (<c:math...
Employing the nonlinear Walecka model we investigate characteristics of nuclear matter under influence a background magnetic field at finite temperature and baryon chemical potential. In presence spinodal lines critical endpoint (CEP) undergo changes in $T\text{\ensuremath{-}}{\ensuremath{\mu}}_{B}$ plane. The squared speed sound exhibits anisotropic behavior, dividing into parallel perpendicular components. Additionally, induces anisotropy isothermal compressibility. It is found that...
We evaluate the dilepton production rate (DPR) from hot and dense chirally asymmetric quark matter. The presence of a finite chiral chemical potential (CCP) in electromagnetic spectral function results appearance new cut structures signifying additional scattering processes medium which leads to significant enhancement DPR at lower values invariant mass. constituent mass evaluated using 3-flavour Nambu--Jona-Lasinio model is also non-trivially affected by CCP. These are found result...
The photon self-energy from chirally imbalanced quark matter is evaluated at finite temperature and density using the real time formulation of thermal field theory. analytic structure explored in detail exposing cut which corresponds to a variety physical scattering decay processes medium their thresholds. mass quarks chiral symmetry broken phase are obtained gap equation Nambu--Jona-Lasinio model. It found that, presence chemical potential, condensate tends get stronger low temperatures...
We calculate, in a systematic way, the general structure of self-energy light massive fermions and effective propagator thermomagnetic medium with inclusion anomalous magnetic moment (AMM) fermion weak field approximation. It is found that this case consists five nontrivial factors contrast to massless where contains only four. employ real time formalism (RTF) thermal theory within ambit hard loop (HTL) approximation evaluation factors. The collective modes are obtained from poles fermion....