Journal Article

PUBDB-2025-00338

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Ginzburg-Landau description for multicritical Yang-Lee models

Lencsés, M. ; Miscioscia, A. (Corresponding author)DESY* ; Mussardo, G. ; Takács, G.

2024
Springer Heidelberg

This record in other databases:        

Please use a persistent id in citations: doi:10.1007/JHEP08(2024)224  doi:10.3204/PUBDB-2025-00338

Report No.: DESY-24-032; arXiv:2404.06100

Abstract: We revisit and extend Fisher’s argument for a Ginzburg-Landau description of multicritical Yang-Lee models in terms of a single boson Lagrangian with potential φ$^{2}$(iφ)$^{n}$. We explicitly study the cases of n = 1, 2 by a Truncated Hamiltonian Approach based on the free massive boson perturbed by PT symmetric deformations, providing clear evidence of the spontaneous breaking of PT symmetry. For n = 1, the symmetric and the broken phases are separated by the critical point corresponding to the minimal model $ \mathcal{M}\left(2,5\right) $, while for n = 2, they are separated by a critical manifold corresponding to the minimal model $ \mathcal{M}\left(2,5\right) $ with $ \mathcal{M}\left(2,7\right) $ on its boundary. Our numerical analysis strongly supports our Ginzburg-Landau descriptions for multicritical Yang-Lee models.

Keyword(s): model: minimal ; boson: massive ; Hamiltonian formalism ; critical phenomena ; deformation ; spontaneous symmetry breaking ; PT symmetry ; Lee-Yang model ; Field Theories in Lower Dimensions ; Renormalization Group

Note: 28 pages, 10 figures

---

Contributing Institute(s):

1. Theorie-Gruppe (T)

Research Program(s):

1. 611 - Fundamental Particles and Forces (POF4-611) (POF4-611)
2. DFG project G:(GEPRIS)390833306 - EXC 2121: Quantum Universe (390833306) (390833306)

Experiment(s):

1. No specific instrument

Appears in the scientific report 2024

---

Database coverage:
; ; ; ; ; Clarivate Analytics Master Journal List ; Current Contents - Physical, Chemical and Earth Sciences ; DOAJ Seal ; Ebsco Academic Search ; Essential Science Indicators ; IF >= 5 ; JCR ; National-Konsortium ; SCOAP3 sponsored Journal ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection

---

---

Linked articles:

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Preprint Lencsés, M. ; Miscioscia, A. (Corresponding author)DESY* ; Mussardo, G. ; Takács, G.
Ginzburg-Landau description for multicritical Yang-Lee models
[10.3204/PUBDB-2024-01104]     Files  Fulltext by arXiv.org BibTeX | EndNote: XML, Text | RIS

---