Magnetic flux loop in high-energy heavy-ion collisions

Adrian Dumitru; Yasushi Nara; Elena Petreska

doi:10.1103/PhysRevD.88.054016

Magnetic flux loop in high-energy heavy-ion collisions

Adrian Dumitru
, Yasushi Nara
, Elena Petreska

(Astro)-Particles Physics

Research output: Contribution to Journal › Article › Academic › peer-review

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Abstract

We consider the expectation value of a magnetic flux loop in the immediate forward light cone of collisions of heavy nuclei at high energies. Such collisions are characterized by a non-linear scale Q_s where color fields become strong. We find that loops of area greater than ~2/Q_s^2 exhibit area law behavior, which determines the scale of elementary flux excitations ("vortices"). We also estimate the magnetic string tension, sigma_M = 0.12 Q_s^2. By the time t ~ 1/Q_s even small loops satisfy an area law. We describe corrections to the propagator of semi-hard gluons at very early times in the background of fluctuating magnetic fields.

Original language	English
Article number	054016
Journal	Physical Review D
Volume	88
Issue number	5
DOIs	https://doi.org/10.1103/PhysRevD.88.054016
Publication status	Published - 17 Sept 2013

Bibliographical note

4 pages, 5 figures; v2: added plot of Z(N) part of loop in fig.1; v3: added magnetic loop for asymmetric projectile/target saturation momenta, estimate of vortex density, and an appendix; v4: corrected outline of perturbative calculation of Wilson loop; to appear in PRD

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Keywords

hep-ph
nucl-th

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10.1103/PhysRevD.88.054016

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title = "Magnetic flux loop in high-energy heavy-ion collisions",

abstract = "We consider the expectation value of a magnetic flux loop in the immediate forward light cone of collisions of heavy nuclei at high energies. Such collisions are characterized by a non-linear scale Q\_s where color fields become strong. We find that loops of area greater than \textasciitilde{}2/Q\_s\textasciicircum{}2 exhibit area law behavior, which determines the scale of elementary flux excitations ({"}vortices{"}). We also estimate the magnetic string tension, sigma\_M = 0.12 Q\_s\textasciicircum{}2. By the time t \textasciitilde{} 1/Q\_s even small loops satisfy an area law. We describe corrections to the propagator of semi-hard gluons at very early times in the background of fluctuating magnetic fields.",

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AU - Nara, Yasushi

AU - Petreska, Elena

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N2 - We consider the expectation value of a magnetic flux loop in the immediate forward light cone of collisions of heavy nuclei at high energies. Such collisions are characterized by a non-linear scale Q_s where color fields become strong. We find that loops of area greater than ~2/Q_s^2 exhibit area law behavior, which determines the scale of elementary flux excitations ("vortices"). We also estimate the magnetic string tension, sigma_M = 0.12 Q_s^2. By the time t ~ 1/Q_s even small loops satisfy an area law. We describe corrections to the propagator of semi-hard gluons at very early times in the background of fluctuating magnetic fields.

AB - We consider the expectation value of a magnetic flux loop in the immediate forward light cone of collisions of heavy nuclei at high energies. Such collisions are characterized by a non-linear scale Q_s where color fields become strong. We find that loops of area greater than ~2/Q_s^2 exhibit area law behavior, which determines the scale of elementary flux excitations ("vortices"). We also estimate the magnetic string tension, sigma_M = 0.12 Q_s^2. By the time t ~ 1/Q_s even small loops satisfy an area law. We describe corrections to the propagator of semi-hard gluons at very early times in the background of fluctuating magnetic fields.

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IS - 5

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ER -

Magnetic flux loop in high-energy heavy-ion collisions

Abstract

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