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The only way to obtain the space-time structure of heavy ion collision is through the study of two-particle momentum correlations. Thus we have studied the intensity correlation for the photons having fixed transverse momentum of one of the…

Nuclear Theory · Physics 2014-07-17 Payal Mohanty , Mahatsab Mandal , Pradip K Roy

We calculate medium photons due to Compton and annihilation processes in an anisotropic media. The effects of time-dependent momentum-space anisotropy of {\em Quark-Gluon-Plasma} (QGP) on the medium photon production are discussed. Such an…

High Energy Physics - Phenomenology · Physics 2010-02-19 Lusaka Bhattacharya , Pradip Roy

We illuminate the intriguing role played by spatial anisotropy in three-dimensional Luttinger semimetals featuring quadratic band touching and long-range Coulomb interactions. We observe the anisotropy to be subject to an exceptionally slow…

Strongly Correlated Electrons · Physics 2017-03-01 Igor Boettcher , Igor F. Herbut

Employing the Polyakov chiral SU(3) mean field (PCQMF) model, we investigate how momentum-space anisotropy, characteristic of quark-gluon plasma (QGP) in ultrarelativistic heavy-ion collisions (uRHIC), impacts the thermodynamic behavior and…

High Energy Physics - Phenomenology · Physics 2025-09-26 Dhananjay Singh , Arvind Kumar

The emission of real photons from a momentum-anisotropic quark-gluon plasma (QGP) is affected by both the collective flow of the radiating medium and the modification of local rest frame emission rate due to the anisotropic momentum…

High Energy Physics - Phenomenology · Physics 2020-07-29 Babak Salehi Kasmaei , Michael Strickland

We discuss the evolution of anisotropic boost-invariant quark-gluon plasma possibly created at the early stages of relativistic heavy-ion collisions. Our considerations are based on the recently proposed formalism that is an extension of…

Nuclear Theory · Physics 2010-01-15 W. Florkowski , R. Ryblewski

The field induced quantum critical properties of the three dimensional spin-1/2 anisotropic antiferromagnetic Heisenberg model has been studied. We have investigated the quantum phase transition between the spiral order and field induced…

Strongly Correlated Electrons · Physics 2015-05-20 H. Rezania , A. Langari

The collective modes of QCD at temperatures and densities above its phase-transition are analyzed for isotropic systems as well as for systems having an anisotropy in momentum-space using the HTL approximation. For isotropic systems,…

High Energy Physics - Phenomenology · Physics 2007-05-23 Paul Romatschke

We calculate radiative energy loss of heavy and light quarks in anisotropic medium (static) in first order opacity expansion. Such an anisotropy can result from the initial rapid longitudinal expansion of the matter, created in relativistic…

Nuclear Theory · Physics 2011-05-05 Pradip Roy , Abhee K. Dutt-Mazumder

We simulate ultra-central collisions of prolate uranium-uranium nuclei at intermediate energies using the isospin-dependent Boltzmann-Uehling-Uhlenbeck model to investigate the impact of momentum anisotropy on spatial geometric effects. By…

Nuclear Theory · Physics 2024-11-28 Xiao-Hua Fan , Zu-Xing Yang , Peng-Hui Chen , Zhi-Pan Li , Wei Zuo , Masaaki Kimura , Shunji Nishimura

This Letter presents the first measurement of the impact-parameter dependent angular anisotropy in the decay of coherently photoproduced $\rho^0$ mesons. The $\rho^0$ mesons are reconstructed through their decay into pion pairs. The…

Nuclear Experiment · Physics 2024-10-29 ALICE Collaboration

We calculate transverse momentum distribution of direct photons from various sources by taking into account the initial state momentum anisotropy of {\em Quark-Gluon-Plasma} (QGP) and late stage transverse flow effects. The total photon…

High Energy Physics - Phenomenology · Physics 2009-05-29 Lusaka Bhattacharya , Pradip Roy

We calculate the nuclear modification factor ($R_{AA}$) of light hadrons by taking into account the initial state momentum anisotropy of the quark gluon plasma (QGP) expected to be formed in relativistic heavy ion collisions. Such an…

High Energy Physics - Phenomenology · Physics 2015-05-27 Mahatsab Mandal , Lusaka Bhattacharya , Pradip Roy

Momentum space anisotropy present in the quark and gluon distribution functions in relativistic heavy ion collisions induces Chromo-Weibel instability in the hot QCD medium created therein. The impact of the Chromo-Weibel instability on the…

Nuclear Theory · Physics 2016-06-08 Vinod Chandra , Santosh K. Das

Recent studies have shown that the shape and radial profile of the colliding nuclei have strong influences on the initial condition of the heavy ion collisions and the subsequent development of the anisotropic flow. Using A Multi-Phase…

Nuclear Theory · Physics 2023-11-29 Zhiyong Lu , Mingrui Zhao , Jiangyong Jia , You Zhou

We study the intensity interferometry with lepton pairs for nuclear collisions at RHIC and LHC energies. It is argued that the invariant mass dependence of HBT radii extracted from the correlation functions of dilepton pairs can be used as…

Nuclear Theory · Physics 2012-02-13 Payal Mohanty , Jan-e Alam

In this work it is shown that the use of a hydrodynamical model of heavy ion collisions which incorporates recent developments, together with updated photon emission rates greatly improves agreement with both ALICE and PHENIX measurements…

High Energy Physics - Phenomenology · Physics 2016-04-27 Jean-François Paquet , Chun Shen , Gabriel S. Denicol , Matthew Luzum , Björn Schenke , Sangyong Jeon , Charles Gale

This paper investigates the relationship between initial spatial anisotropy and final state momentum anisotropy in heavy ion collisions through the analysis of elliptic flow ($v_2$) as a function of transverse momentum ($p_T$). Building…

Nuclear Theory · Physics 2024-12-10 Mira Varma , Oliver Baker

Expansion dynamics at the yoctosecond timescale affect the evolution of the quark gluon plasma (QGP) created in heavy ion collisions. We show how these dynamics are accessible through Hanbury Brown and Twiss (HBT) intensity interferometry…

High Energy Physics - Phenomenology · Physics 2013-05-30 Andreas Ipp , Peter Somkuti

We study the effects of anisotropic hopping amplitudes on quantum phases of ultracold fermions in optical lattices described by the repulsive Fermi-Hubbard model. In particular, using dynamical mean-field theory (DMFT) we investigate the…

Quantum Gases · Physics 2015-11-03 Anna Golubeva , Andrii Sotnikov , Walter Hofstetter
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