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Dilepton production in heavy-ion collisions at various energies is studied using coarse-grained transport simulations. Microscopic output from the Ultra-relativistic Quantum Molecular Dynamics (UrQMD) model is hereby put on a grid of…

核理论 · 物理学 2016-09-30 Stephan Endres , Hendrik van Hees , Marcus Bleicher

In quantum field theories at finite temperature spectral functions describe how particle systems behave in the presence of a thermal medium. Although data from lattice simulations can in principle be used to determine spectral function…

高能物理 - 格点 · 物理学 2023-01-11 Peter Lowdon , Owe Philipsen

Spectral densities connect correlation functions computed in quantum field theory to observables measured in experiments. For strongly-interacting theories, their non-perturbative determinations from lattice simulations are therefore of…

高能物理 - 格点 · 物理学 2024-07-08 Mattia Bruno , Leonardo Giusti , Matteo Saccardi

Standard methods for including electromagnetic interactions in lattice quantum chromodynamics calculations result in power-law finite-volume corrections to physical quantities. Removing these by extrapolation requires costly computations at…

高能物理 - 格点 · 物理学 2016-08-12 Michael G. Endres , Andrea Shindler , Brian C. Tiburzi , Andre Walker-Loud

We review the potential of precise measurements of electromagnetic probes in relativistic heavy-ion collisions for the theoretical understanding of strongly interacting matter. The penetrating nature of photons and dileptons implies that…

高能物理 - 唯象学 · 物理学 2016-08-23 R. Rapp , H. van Hees

I discuss why photon production from the Quark Gluon Plasma (QGP) presents an interesting problem, both experimentally and theoretically. I show how the photon emission rate can be computed under the simplifying assumption that the QGP…

高能物理 - 唯象学 · 物理学 2009-11-10 Guy D. Moore

We perform a systematic study of dilepton emission in a hot QCD medium based on three different scenarios of chiral mixing, each of which yields a characteristic structure in the vector spectral function. The in-medium spectral functions…

We utilize lattice simulations of the dimensionally reduced effective field theory (EQCD) to determine the quark number susceptibility of QCD at high temperature ($T>2T_c$). We also use analytic continuation to obtain results at finite…

高能物理 - 格点 · 物理学 2008-11-26 Ari Hietanen , Kari Rummukainen

I discuss lattice QCD calculations of the properties of strongly interacting matter at finite temperature, including the determination of the transition temperature Tc, equation of state, different static screening lengths and quarkonium…

高能物理 - 格点 · 物理学 2008-11-26 Peter Petreczky

I discuss recent developments in finite temperature lattice QCD, including the calculation of the transition temperature, equation of state, color screening and meson spectral functions.

高能物理 - 格点 · 物理学 2008-11-26 P. Petreczky

The formalism of photon and dilepton productions in a thermal bath are discussed in the frame work of finite temperature field theory. The emission rate has been expressed in terms of the discontinuities or imaginary part of the photon self…

核理论 · 物理学 2016-01-07 Jan-e Alam , Sourav Sarkar , Pradip Roy , Bikash Sinha

I review recent progress in finite temperature lattice calculations, including calculations of Equation of State, fluctuations of conserved charges and spatial correlation functions. I compare lattice results with the predictions of hadron…

高能物理 - 唯象学 · 物理学 2009-11-18 P. Petreczky

Using the Landau-level representation for the imaginary part of the photon polarization tensor, we derive an explicit expression for the dilepton production rate from a hot quark-gluon plasma in a quantizing background magnetic field. We…

核理论 · 物理学 2022-08-16 Xinyang Wang , Igor A. Shovkovy

A brief survey is given on the current status of evaluating thermal production of photons from a strongly interacting medium. Emphasis is put on recent progress in assessing equilibrium emission rates in both hadronic and quark-gluon…

核理论 · 物理学 2009-11-10 Ralf Rapp

We calculate leading-order medium photon yields from a quark-gluon plasma using (3+1)-dimensional anisotropic hydrodynamics. Non-equilibrium corrections to the photon rate are taken into account using a self-consistent modification of the…

高能物理 - 唯象学 · 物理学 2016-03-09 Lusaka Bhattacharya , Radoslaw Ryblewski , Michael Strickland

We study the thermal emission of photons from hot and dense strongly interacting hadronic matter at temperatures close to the expected phase transition to the Quark-Gluon Plasma (QGP). Earlier calculations of photon radiation from ensembles…

高能物理 - 唯象学 · 物理学 2014-11-17 Simon Turbide , Ralf Rapp , Charles Gale

The photon emissivity of quark-gluon plasma probes the interactions in the medium and differs qualitatively between a weakly coupled and a strongly coupled plasma in the soft-photon regime. The photon emissivity is given by the product of…

高能物理 - 格点 · 物理学 2021-12-02 Marco Cè , Tim Harris , Harvey B. Meyer , Arianna Toniato , Csaba Török

The thermal-photon emission from strongly coupled gauge theories at finite temperature is calculated using holographic models for QCD in the Veneziano limit (V-QCD). The emission rates are then embedded in hydrodynamic simulations combined…

高能物理 - 唯象学 · 物理学 2017-04-18 Ioannis Iatrakis , Elias Kiritsis , Chun Shen , Di-Lun Yang

Parton distribution functions are key quantities for us to understand the hadronic structures in high-energy scattering, but they are difficult to calculate from lattice QCD. Recent years have seen fast development of the large-momentum…

高能物理 - 唯象学 · 物理学 2019-04-29 Yong Zhao

The thermal-photon emission from strongly coupled gauge theories at finite temperature is calculated by using holographic models for QCD in the Veneziano limit (V-QCD). These emission rates are then embedded in hydrodynamic simulations…

高能物理 - 唯象学 · 物理学 2017-04-05 Ioannis Iatrakis , Elias Kiritsis , Chun Shen , Di-Lun Yang