Journal
PHYSICS LETTERS B
Volume 792, Issue -, Pages 4-15Publisher
ELSEVIER
DOI: 10.1016/j.physletb.2018.10.043
Keywords
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Funding
- NSF Nuclear Theory grant [1614640]
- Fulbright US scholar program
- CERN scientific associateship
- CERN theory division
- Heavy Ion group
- Israel Science Foundation [1635/16]
- BSF [2012124, 2014707]
- COST Action [CA15213 THOR]
- Kreitman fellowship by the Ben Gurion University of the Negev
- Direct For Mathematical & Physical Scien
- Division Of Physics [1614640] Funding Source: National Science Foundation
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Working in the framework of the Color Glass Condensate effective theory of high energy QCD, we revisit the momentum space entanglement entropy of the soft gluons produced in high energy dilute-dense collisions. We extend the work of [1] by considering entropy produced in a single event. This entropy arises due to decoherence of eigenstates with different energies during the time evolution after the collisions with the target. We define it rigorously as the entanglement entropy of the produced system with the experimental apparatus. We compute the time dependent single event entropy in the limit of weak projectile field. Further we compute the entropy for the ensemble of events defined by the McLerran-Venugopalan model for the projectile wave function. Interestingly the entropy of the ensemble has a much weaker time dependence than the entropy in any single event. We attribute this feature to the so called monogamy of entanglement. (C) 2018 The Author(s). Published by Elsevier B.V.
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