Abelian scalar theory at large global charge

Loukas, Orestis (2017). Abelian scalar theory at large global charge. Fortschritte der Physik / Progress of physics, 65(9), p. 1700028. Wiley-VCH 10.1002/prop.201700028

[img] Text
Loukas-2017-Fortschritte_der_Physik.pdf - Published Version
Restricted to registered users only
Available under License Publisher holds Copyright.

Download (388kB)

We elaborate on Abelian complex scalar models, which are dictated by natural actions (all couplings are of order one), at fixedand large global U(1) charge in an arbitrary number of dimensions. The ground state |v〉is coherently constructed by the zero modes and the appearance of a centrifugal potential is quantum mechanically verified. Using the path integral formulation we systematically analyze the quantum fluctuations around |v〉in order to derive an effective action for the Goldstone mode, which becomes perturbatively meaningful when the charge is large. In this regime we explicitly show, by computing the first few loop corrections, that the whole construction is stable against quantum effects, in the sense that any higher derivative couplings to Goldstone’s tree-level action are suppressed by appropriate powers of the large charge.

Item Type:

Journal Article (Original Article)

Division/Institute:

08 Faculty of Science > Institute of Theoretical Physics

UniBE Contributor:

Loukas, Orestis

Subjects:

500 Science > 530 Physics

ISSN:

0015-8208

Publisher:

Wiley-VCH

Language:

English

Submitter:

Esther Fiechter

Date Deposited:

09 Aug 2019 14:43

Last Modified:

05 Dec 2022 15:25

Publisher DOI:

10.1002/prop.201700028

ArXiv ID:

1612.08985

BORIS DOI:

10.7892/boris.125069

URI:

https://boris.unibe.ch/id/eprint/125069

Actions (login required)

Edit item Edit item
Provide Feedback