Results 71 to 80 of about 41,421 (213)

Heavy Quarkonia in Quark-Gluon Plasma

, 2005
Using the color-singlet free energy F_1 and total internal energy U_1 obtained by Kaczmarek et al. for a static quark Q and an antiquark Qbar in quenched QCD, we study the binding energies and wave functions of heavy quarkonia in a quark-gluon plasma. By
C. W. Misner, Cheuk-Yin Wong, F. Karsch, J. des Cloizeaux, J. I. Kapusta, J. M. Blatt, J. M. Yeomans, K. Gottfried, L. D. Landau, L. D. Landau, L. D. Landau, M. Peskin, P. Kolb, R. Balian, R. Barbieri, R. P. Feynman, S. Weinberg, T. Hatsuda, V. B. Berestetskii, V. V. Klimov, V. V. Klimov, Yu. A. Simonov, Yu. A. Simonov   +22 more
core   +1 more source

How a quark-gluon plasma phase modifies the bounds on extra dimensions from SN 1987a [PDF]

, 2001
The shape of the neutrino pulse from the supernova SN1987a provides one of the most stringent constraints on the size of large, compact, "gravity-only" extra dimensions.
Arndt, Daniel
core   +3 more sources

Generation of Electric Current by Magnetic Field at the Boundary: Quantum Scale Anomaly Versus Semiclassical Meissner Current Outside of the Conformal Limit

Advanced Physics Research, Volume 4, Issue 7, July 2025.
The paper discusses the role of scale anomaly in generating edge electric currents via the scale magnetic effect in scalar electrodynamics. Although the boundary electric current is much weaker than the Meissner current induced in superconducting materials, the scale anomaly can enhance conductivity near the boundary of the material.
Maxim Chernodub, Vladimir Goy, Alexander Molochkov   +2 more
wiley   +1 more source

Confinement of Fermions in Tachyon Matter at Finite Temperature

Advances in High Energy Physics, 2021
We study a phenomenological model that mimics the characteristics of QCD theory at finite temperature. The model involves fermions coupled with a modified Abelian gauge field in a tachyon matter.
Adamu Issifu, Julio C. M. Rocha, Francisco A. Brito   +2 more
doaj   +1 more source

D3-D7 quark-gluon plasmas

Journal of High Energy Physics, 2009
We present the string dual to finite temperature SU(Nc) N=4 SYM coupled to massless fundamental matter introduced by Nf D7 branes, with Abelian flavor symmetry. The analytic solution includes the backreaction of the flavors up to second order in the parameter that weighs the internal flavor loops, epsilon_h=(lambda_h Nf)/(8 pi^2 Nc), lambda_h being the
Bigazzi, Francesco, COTRONE, ALDO LORENZO, Mas, Javier, Paredes, Angel, Ramallo, Alfonso V, Tarrío, Javier   +5 more
openaire   +2 more sources

Exploring Dark Photon Production and Kinetic Mixing Constraints in Heavy‐Ion Collisions

Astronomische Nachrichten, Volume 346, Issue 3-4, March-May 2025.
ABSTRACT Vector U‐bosons, often referred to as “dark photons,” are potential candidates for mediating dark matter interactions. In this study, we outline a procedure to derive theoretical constraints on the upper bound of the kinetic mixing parameter ϵ2MU$$ {\upvarepsilon}^2\left({M}_U\right) $$ using dilepton data from heavy‐ion from SIS to RHIC ...
Adrian William Romero Jorge, Elena Bratkovskaya, Taesoo Song, Laura Sagunski   +3 more
wiley   +1 more source

Momentum Broadening in Weakly Coupled Quark-Gluon Plasma [PDF]

, 2011
We calculate the probability distribution P(k_\perp) for the momentum perpendicular to its original direction of motion that an energetic quark or gluon picks up as it propagates through weakly coupled quark-gluon plasma in thermal equilibrium.Comment: 4
D'Eramo, Francesco, Lee, Christopher, Lekaveckas, Mindaugas, Liu, Hong, Rajagopal, Krishna   +4 more
core   +3 more sources

Heavy Quarkonium States With Baryonic Chemical Potential

Advances in High Energy Physics, Volume 2025, Issue 1, 2025.
In this work, we have studied the dissociation behavior of 1S and 2S states of quarkonium using quasiparticle approach where the Debye mass depends on baryonic chemical potential. The binding energies of the quarkonium states has been obtained by using quasiparticle Debye mass which further depends on temperature and baryonic chemical potential (μb ...
Siddhartha Solanki, Manohar Lal, Vineet Kumar Agotiya, Andrea Coccaro   +3 more
wiley   +1 more source

Far-off-equilibrium early-stage dynamics in high-energy nuclear collisions [PDF]

EPJ Web of Conferences
We explore the far-off-equilibrium aspects of the (1+1)-dimensional early-stage evolution of a weakly-coupled quark-gluon plasma using kinetic theory and hydrodynamics.
Chattopadhyay Chandrodoy, Heinz Ulrich, Schäfer Thomas   +2 more
doaj   +1 more source

Quark–gluon plasma—new frontiers [PDF]

Journal of Physics G: Nuclear and Particle Physics, 2008
As implied by organizers, this talk is not a conference summary but rather an outline of progress/challenges/``frontiers'' of the theory. Some fundamental questions addressed are: Why is sQGP such a good liquid? Do we understand (de)confinement and what do we know about ``magnetic'' objects creating it?
openaire   +2 more sources