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Repulsive hadronic interactions play a relevant role in the QCD dynamics, attractive ones being represented by resonance formation. In this study we propose different schemes in order to parameterise repulsive interactions, then being able…

Nuclear Theory · Physics 2019-06-05 Paolo Alba

Different variants of the Hadron Resonance Gas model have been used to describe the hadronic phase of strongly interacting matter. HRG model is improved by including repulsive interaction through the inclusion of excluded volume in Excluded…

Nuclear Theory · Physics 2025-01-24 Somenath Pal

We investigate extensions of the Hadron Resonance Gas (HRG) Model beyond the ideal case by incorporating both attractive and repulsive interactions into the model. When considering additional states exceeding those measured with high…

Nuclear Theory · Physics 2023-03-22 Jamie M. Karthein , Volker Koch , Claudia Ratti , Volodymyr Vovchenko

We match three hadronic equations of state at low energy densities to a perturbatively computed equation of state of quarks and gluons at high energy densities. One of them includes all known hadrons treated as point particles, which…

Nuclear Theory · Physics 2014-09-05 M. Albright , J. Kapusta , C. Young

We report the effect of including repulsive interactions on various thermodynamic observables calculated using a S-matrix based Hadron Resonance Gas (HRG) model to already available corresponding results with only attractive interactions…

High Energy Physics - Phenomenology · Physics 2019-04-30 Ashutosh Dash , Subhasis Samanta , Bedangadas Mohanty

We discuss the interacting hadron resonance gas model to describe the thermodynamics of hadronic matter. While the attractive interaction between hadrons is taken care of by including all the resonances with zero width, the repulsive…

High Energy Physics - Phenomenology · Physics 2019-10-23 Guruprasad Kadam , Hiranmaya Mishra

The first principle lattice QCD methods allow to calculate the thermodynamic observables at finite temperature and imaginary chemical potential. These can be compared to the predictions of various phenomenological models. We argue that…

High Energy Physics - Phenomenology · Physics 2017-11-01 Volodymyr Vovchenko , Attila Pasztor , Zoltan Fodor , Sandor D. Katz , Horst Stoecker

Fluctuations of conserved charges allow to study the chemical composition of hadronic matter. A comparison between lattice simulations and the Hadron Resonance Gas (HRG) model suggested the existence of missing strange resonances. To…

Thermodynamic properties of systems with repulsive interactions, are considered in the grand canonical ensemble. The analytic structure of the excluded-volume model in the complex plane of the system chemical potential (fugacity) is…

High Energy Physics - Phenomenology · Physics 2019-12-11 Kirill Taradiy , Anton Motornenko , Volodymyr Vovchenko , Mark I. Gorenstein , Horst Stoecker

The effective residual interaction for a system of hadrons has a long tradition in theoretical physics. It has been mostly addressed in terms of boson exchange models. The aim of this review is to describe approaches based on lattice field…

High Energy Physics - Lattice · Physics 2007-05-23 H. Rudolf Fiebig , Harald Markum

We investigate the effects of repulsive interaction between hadrons on the fluctuations of the conserved charges. We calculate the baryon,the electric charge and the strangeness susceptibilities within the ambit of hadron resonance gas…

High Energy Physics - Phenomenology · Physics 2021-03-24 Somenath Pal , Guruprasad Kadam , Hiranmaya Mishra , Abhijit Bhattacharyya

Beyond the attractive strong potential needed for hadronic bound states, strong interactions are predicted to provide repulsive forces depending on the color charges involved. The repulsive interactions could in principle serve for particle…

High Energy Physics - Phenomenology · Physics 2017-06-27 Martin Erdmann , Christian Glaser , Thorben Quast

We compare two approaches in modeling repulsive interactions among hadrons: the excluded volume approximation and the S-matrix formalism. These are applied to study the thermodynamics of the $\pi N \Delta$ system. It is shown that the…

Nuclear Theory · Physics 2017-08-02 Pok Man Lo , Bengt Friman , Michal Marczenko , Krzysztof Redlich , Chihiro Sasaki

We show how repulsive interactions of deconfined quarks as well as confined hadrons have an influence on the baryon number susceptibilities and the curvature of the chiral pseudo critical line in effective models of QCD. We discuss…

Nuclear Theory · Physics 2014-08-08 Jan Steinheimer , Stefan Schramm

We perform a Bayesian calibration of the Cross--term Excluded-Volume Hadron Resonance Gas (Cross EV--HRG) model, which incorporates flavor-dependent repulsive interactions within a thermodynamically consistent framework. For the first time,…

High Energy Physics - Phenomenology · Physics 2026-01-05 Nachiketa Sarkar

The quintessential two-dimensional lattice model that describes the competition between the kinetic energy of electrons and their short-range repulsive interactions is the repulsive Hubbard model. We study a time-reversal symmetric variant…

Strongly Correlated Electrons · Physics 2012-01-26 Titus Neupert , Luiz Santos , Shinsei Ryu , Claudio Chamon , Christopher Mudry

We present, in the framework of the interacting hadron resonance gas, an evaluation of thermodynamical quantities. The interaction is modelled via a correction for the finite size of the hadrons. We investigate the sensitivity of the model…

Nuclear Theory · Physics 2015-06-03 A. Andronic , P. Braun-Munzinger , J. Stachel , M. Winn

We reformulate the treatment of density-dependent chemical potential shifts appearing in excluded-volume implementations of the hadron resonance gas model. An auxiliary classical representation is constructed in which a common energy shift…

High Energy Physics - Phenomenology · Physics 2026-02-26 Somenath Pal

We investigate the effect of repulsive interaction between hadrons on the susceptibilities of conserved charges, namely baryon number (B), electric charge (Q) and strangeness (S). We estimate second fourth and sixth-order susceptibilities…

High Energy Physics - Phenomenology · Physics 2024-12-17 Somenath Pal , Guruprasad Kadam , Abhijit Bhattacharyya

An overview of a hadron resonance gas (HRG) model that includes van der Waals interactions between hadrons is presented. Applications of the excluded volume HRG model to heavy-ion collision data and lattice QCD equation of state are…

Nuclear Theory · Physics 2020-07-09 Volodymyr Vovchenko
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