Universal scaled Higgs-mass gap for the bilayer Heisenberg model in the ordered phase

Yoshihiro Nishiyama ()
Additional contact information
Yoshihiro Nishiyama: Faculty of Science, Okayama University

The European Physical Journal B: Condensed Matter and Complex Systems, 2016, vol. 89, issue 2, 1-5

Abstract: Abstract The spectral properties for the bilayer quantum Heisenberg model were investigated with the numerical diagonalization method. In the ordered phase, there appears the massive Higgs excitation embedded in the continuum of the Goldstone excitations. Recently, it was claimed that the properly scaled Higgs mass is a universal constant in proximity to the critical point. Diagonalizing the finite-size cluster with N ≤ 36 spins, we calculated the dynamical scalar susceptibility \hbox{$\chi_s''(\omega)$} χ s ′′ ( ω ) , which is rather insensitive to the Goldstone mode. A finite-size-scaling analysis of \hbox{$\chi_s ''(\omega)$} χ s ′′ ( ω ) is made, and the universal (properly scaled) Higgs mass is estimated.

Keywords: Solid; State; and; Materials (search for similar items in EconPapers)
Date: 2016
References: Add references at CitEc
Citations:

Downloads: (external link)
http://link.springer.com/10.1140/epjb/e2016-60885-0 Abstract (text/html)
Access to the full text of the articles in this series is restricted.

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:spr:eurphb:v:89:y:2016:i:2:d:10.1140_epjb_e2016-60885-0

Ordering information: This journal article can be ordered from
http://www.springer.com/economics/journal/10051

DOI: 10.1140/epjb/e2016-60885-0

Access Statistics for this article

The European Physical Journal B: Condensed Matter and Complex Systems is currently edited by P. Hänggi and Angel Rubio

More articles in The European Physical Journal B: Condensed Matter and Complex Systems from Springer, EDP Sciences
Bibliographic data for series maintained by Sonal Shukla () and Springer Nature Abstracting and Indexing ().