1. Αποθετήριο Παραδοτέων Υποτρόφων Δράσεων ΕΣΠΑ Τριτοβάθμιας Εκπαίδευσης 2017-2023
2. Όλο το Αποθετήριο
3. Μεταδιδακτορικοί ερευνητές

Τύπος:	Άρθρο σε επιστημονικό περιοδικό
Τίτλος:	An inverse mass expansion for entanglement entropy in free massive scalar field theory
Συγγραφέας:	[EL] Κατσίνης, Δημήτριος[EN] Katsinis, Dimitrios [EL] Πάστρας, Γεώργιος[EN] Pastras, Georgios
Ημερομηνία:	03/04/2018
Περίληψη:	We extend the entanglement entropy calculation performed in the seminal paper by Srednicki (Phys Rev Lett 71:666, 1993) for free real massive scalar field theories in 1+1, 2+1 and 3+1 dimensions.We show that the inverse of the scalar fieldmass can be used as an expansion parameter for a perturbative calculation of the entanglement entropy.We perform the calculation for the ground state of the system and for a spherical entangling surface at third order in the inverse mass expansion. The calculated entanglement entropy contains a leading area law term, as well as subleading terms that depend on the regularization scheme, as expected. Universal terms are non-perturbative effects in this approach. Interestingly, this perturbative expansion can be used to approximate the coefficient of the area lawterm, even in the case of a massless scalar field in 2+1 and 3+1 dimensions. The presented method provides the spectrum of the reduced density matrix as an intermediate result, which is an important advantage in comparison to the replica trick approach. Our perturbative expansion underlines the relation between the area law and the locality of the underlying field theory.
Γλώσσα:	Αγγλικά
Σελίδες:	18
DOI:	10.1140/epjc/s10052-018-5596-4
EISSN:	1434-6052
Θεματική κατηγορία:	[EL] Πυρηνική φυσική[EN] Nuclear Physics [EL] Μαθηματική φυσική[EN] Mathematical Physics
Λέξεις-κλειδιά:	quantum entanglement; free scalar field theory; area law
Κάτοχος πνευματικών δικαιωμάτων:	© The Author(s) 2018
Όροι και προϋποθέσεις δικαιωμάτων:	Open Access This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
Διατίθεται ανοιχτά στην τοποθεσία:	https://arxiv.org/abs/1711.02618 https://link.springer.com/article/10.1140%2Fepjc%2Fs10052-018-5596-4
Ηλεκτρονική διεύθυνση του τεκμηρίου στον εκδότη:	https://link.springer.com/article/10.1140%2Fepjc%2Fs10052-018-5596-4
Ηλεκτρονική διεύθυνση περιοδικού:	https://www.springer.com/journal/10052
Τίτλος πηγής δημοσίευσης:	The European Physical Journal C
Τεύχος:	78
Σελίδες τεκμηρίου (στην πηγή):	Article no 282
Σημειώσεις:	The research of G. Pastras is funded by the “Postdoctoral researchers support” action of the operational programme “human resources development, education and long life learning, 2014- 2020”, with priority axes 6, 8 and 9, implemented by the Greek State Scholarship Foundation and co-funded by the European Social Fund - ESF and National Resources of Greece
Εμφανίζεται στις συλλογές:	Μεταδιδακτορικοί ερευνητές