Article
Physics, Multidisciplinary
Johannes Renner, Matthias Schmidt, Daniel de las Heras
Summary: The velocity field in a moving fluid is affected by its inherent viscous behavior, which helps to dampen any inhomogeneities. Both bulk and shear effects, related to the divergence and curl of the velocity field, play a role in this process. Memory also plays a significant role on molecular time scales beyond the Navier-Stokes description. Through molecular and overdamped Brownian dynamics many-body simulations, it has been demonstrated that similar viscous effects also act on the acceleration field, which can be quantitatively described using simple exponentially decaying memory kernels. The simultaneous use of velocity and acceleration fields allows for the description of fast dynamics on molecular scales.
PHYSICAL REVIEW LETTERS
(2022)
Article
Astronomy & Astrophysics
Rajkumar Mondal, Nilanjan Chaudhuri, Snigdha Ghosh, Sourav Sarkar, Pradip Roy
Summary: In this study, the rate of dilepton emission from a magnetized hot hadronic medium is calculated based on the real-time formalism of finite temperature field theory. The one-loop self-energy of neutral rho mesons is evaluated, taking into account the thermomagnetic propagators of charged pions in the loop. The in-medium thermomagnetic spectral function of rho is found to be proportional to the dilepton production rate, and the study also reveals the existence of a nontrivial yield in the low invariant-mass region due to the Landau level occupation effect of charged pions in scattering with neutral rho mesons.
Article
Physics, Nuclear
Fernando G. Gardim, Jean-Yves Ollitrault
Summary: The study found that the viscous damping of anisotropic flow in heavy-ion collisions is primarily determined by effective shear and bulk viscosities, which are weighted averages over temperature. Additionally, it was shown that at a fixed collision energy, the effective viscosity is independent of centrality and system size to the same extent as the mean transverse momentum of outgoing hadrons.
Article
Astronomy & Astrophysics
Arpan Das, Hiranmaya Mishra, Ranjita K. Mohapatra
Summary: Heavy ion collisions produce a large amount of bulk matter with multiple conserved quantum numbers. We have studied the diffusion process of these charges using a diffusion matrix that describes the interdependence of the diffusion of different charges. The diagonal diffusion coefficients are found to be positive definite, and the off-diagonal components affect the charge diffusion significantly. Excluded volume corrections do not have a significant effect on the estimation of the diffusion matrix elements.
Article
Physics, Particles & Fields
Mubarak Alqahtani, Michael Strickland
Summary: Based on experimental data, 3+1D quasiparticle anisotropic hydrodynamics can well describe bulk observables in 5.02 TeV Pb-Pb collisions, especially showing excellent descriptive capability for the momentum dependence of K/pi and p/pi ratios in the 0-5% centrality class reported by the ALICE collaboration.
EUROPEAN PHYSICAL JOURNAL C
(2021)
Article
Astronomy & Astrophysics
Zhen Zhang, Peng-Cheng Chu, Xiao-Hua Li, He Liu, Xiao-Min Zhang
Summary: The study investigates the properties of strange-quark matter and u-d quark matter using a quark quasiparticle model, including the equation of state, sound velocity, stability region for star matter, maximum mass of quark stars (QSs), and tidal deformability for QSs. Results show that recently discovered heavy compact stars can be well described as QSs within the quasiparticle model.
Article
Mechanics
Aditya Heru Prathama, Carlos Pantano
Summary: This study investigates the linear stability of a vertical interface separating two miscible fluid columns of different densities and viscosities under the influence of gravity, showing how disturbances grow over time depending on wave numbers and flow parameters. It is found that the growth rate of perturbation energy is influenced by small wavenumbers initially, dominated by two-dimensional modes, with substantial transient growth observed at higher wave modes initially followed by decay over time. Sensitivity analysis on perturbation growth with respect to initial time, density, and viscosity ratios is also conducted.
JOURNAL OF FLUID MECHANICS
(2021)
Article
Physics, Multidisciplinary
Debmalya Chakraborty, Annica M. Black-Schaffer
Summary: This study demonstrates that quasiparticle interference (QPI) can serve as a direct experimental probe of bulk odd-frequency superconducting pairing. Using Fourier transform scanning tunneling microscopy and spectroscopy, the study shows that the nature of QPI peaks can only be characterized by including the odd-frequency pairing correlations generated in the system, particularly identifying the defining feature of odd-frequency pairing as a bias asymmetry in QPI, which is present in materials with odd-frequency pairing regardless of its origin.
PHYSICAL REVIEW LETTERS
(2022)
Article
Astronomy & Astrophysics
Ritesh Ghosh, Najmul Haque
Summary: Using the linear sigma model, we calculate the transport coefficient of hadronic matter in the presence of temperature and magnetic field. We find that the transport coefficients are anisotropic in the presence of the magnetic field. Additionally, we calculate the temperature and magnetic-field-dependent anisotropic shear viscosity coefficients and discuss the behavior of the perpendicular components of the shear-viscous coefficient.
Article
Physics, Particles & Fields
Peng-Cheng Chu, Qian Cao, He Liu, Xiao-Hua Li, Min Ju, Xu-Hao Wu, Ying Zhou
Summary: In this study, the thermodynamical properties of color-flavor locked (CFL) quark matter at zero temperature, finite temperature, and strong magnetic field were investigated using a quasiparticle model. The results show that considering CFL quark phase can lead to the formation of large quark stars under certain constraints.
EUROPEAN PHYSICAL JOURNAL C
(2023)
Article
Physics, Nuclear
Md Rihan Haque, Subhash Singha, Bedangadas Mohanty
Summary: The study using the multiphase transport (AMPT) model in p + Pb collisions shows that the pseudorapidity density and elliptic flow of light quark particles agree reasonably with measurements by ALICE. Predictions were also made regarding the directed flow of light and heavy quarks in these collisions, showing a significant difference in magnitude between heavy and light quark species. The results suggest that the v(1) values of light and heavy quarks may be used to probe the initial matter density and collective dynamics in p + Pb collisions.
Article
Physics, Multidisciplinary
Nobuyuki Yoshioka, Wataru Mizukami, Franco Nori
Summary: This study demonstrates the potential of artificial neural networks in predicting properties of solid systems, accurately simulating ground-state energies and quasiparticle band spectra, providing a new computational method for elucidating complex many-body phenomena in solid-state systems.
COMMUNICATIONS PHYSICS
(2021)
Article
Physics, Nuclear
J-B Rose, J. M. Torres-Rincon, H. Elfner
Summary: The study investigates the temperature dependence of bulk viscosity in a relativistic hadron gas, showing a decreasing trend of overall bulk viscosity with increasing temperature, while the effective bulk viscosity does not have a strong dependence on temperature. The analysis also considers the strong influence of resonances and their lifetimes.
JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS
(2021)
Article
Materials Science, Multidisciplinary
Han-gyu Kim, Hyoung Joon Choi
Summary: First-principles density functional theory (DFT) and GW calculations were used to investigate the electronic structures of bulk and few-layer PdSe2. The obtained quasiparticle band structures and electronic structure parameters provide a foundation for both basic research and device applications.
Article
Physics, Multidisciplinary
Vir B. Bulchandani, Manas Kulkarni, Joel E. Moore, Xiangyu Cao
Summary: In both quantum and classical Calogero models, the quasiparticle kinetic theory reduces to the free-streaming Boltzmann equation. A Bethe-Lax correspondence is developed in the classical case to reconcile the simple emergent behavior with the strongly interacting character of the model. This framework provides a simple description of multi-soliton solutions in a harmonic trap, showing excellent agreement with numerical simulations for both integrable and non-integrable cases.
JOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL
(2021)
Article
Astronomy & Astrophysics
Purnendu Chakraborty, Munshi G. Mustafa, Markus H. Thoma
Article
Astronomy & Astrophysics
Purnendu Chakraborty, Munshi G. Mustafa
Article
Physics, Particles & Fields
Purnendu Chakraborty
JOURNAL OF HIGH ENERGY PHYSICS
(2013)
Article
Physics, Multidisciplinary
Anton Wiranata, Madappa Prakash, Purnendu Chakraborty
CENTRAL EUROPEAN JOURNAL OF PHYSICS
(2012)
Article
Physics, Multidisciplinary
Purnendu Chakraborty
EUROPEAN PHYSICAL JOURNAL PLUS
(2019)
Article
Physics, Nuclear
P. Chakraborty, J. I. Kapusta
Article
Physics, Nuclear
Purnendu Chakraborty, Munshi Golam Mustafa, Rajarshi Ray, Markus H. Thoma
JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS
(2007)
Article
Physics, Nuclear
Purnendu Chakraborty, Munshi Golam Mustafa, Markus H. Thoma
Article
Astronomy & Astrophysics
Purnendu Chakraborty, Munshi G. Mustafa, Markus H. Thoma
Article
Astronomy & Astrophysics
P Chakraborty, MG Mustafa, MH Thoma
Article
Astronomy & Astrophysics
P Chakraborty, MG Mustafa, MH Thoma
Article
Physics, Particles & Fields
P Chakraborty, MG Mustafa, MH Thoma
EUROPEAN PHYSICAL JOURNAL C
(2002)
Article
Physics, Nuclear
MG Mustafa, MH Thoma, P Chakraborty
