Entanglement and thermalization

• Verfasst von: Berges, Jürgen [VerfasserIn]
• Verfasst von: Flörchinger, Stefan [VerfasserIn]
• Verfasst von: Venugopalan, Raju [VerfasserIn]
• Titel: Entanglement and thermalization
• Verf.angabe: Jürgen Berges, Stefan Floerchinger, Raju Venugopalan
• E-Jahr: 2019
• Jahr: 22 January 2019
• Umfang: 4 S.
• Fussnoten: XXVIIth International Conference on Ultrarelativistic Nucleus-Nucleus Collisions (Quark Matter 2018) ; Gesehen am 26.11.2019
• Titel Quelle: Enthalten in: Nuclear physics <Amsterdam> / A
• Ort Quelle: Amsterdam : North-Holland Publ. Co., 1967
• Jahr Quelle: 2019
• Band/Heft Quelle: 982(2019), Seite 819-822
• ISSN Quelle: 1873-1554
• DOI: doi:10.1016/j.nuclphysa.2018.12.008
• Datenträger: Online-Ressource
• Sprache: eng
• K10plus-PPN: 158764018X

Abstract

In a quantum field theory, apparent thermalization can be a consequence of entanglement as opposed to scatterings. We discuss here how this can help to explain open puzzles such as the success of thermal models in electron-positron collisions. It turns out that an expanding relativistic string described by the Schwinger model (which also underlies the Lund model) has at early times an entanglement entropy that is extensive in rapidity. At these early times, the reduced density operator is of thermal form, with an entanglement temperature Tτ=ħ/(2πkBτ), even in the absence of any scatterings.