• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to project page

2019 Fiscal Year Annual Research Report

Interdisciplinary study of gravity and curvature effect in strongly coupled systems

Research Project

Project/Area Number 17F17763
Research InstitutionKeio University

Principal Investigator

フラキ アントニノ  慶應義塾大学, 商学部(日吉), 准教授 (20444474)

Co-Investigator(Kenkyū-buntansha) VITAGLIANO VINCENZO  慶應義塾大学, 商学部, 外国人特別研究員
Project Period (FY) 2017-11-10 – 2020-03-31
Keywordssymmetry breaking / quantum vacuum / Casimir effect / quantum fields
Outline of Annual Research Achievements

Research carried out during the last fiscal year has focused on two topics: one regarded the deformation of the quantum vacuum in nonlinear sigma models at finite density. For these theories we have shown that the ground state, usually believed to be homogeneous, it becomes inhomogeneous above a critical density. We have further shown that at high density, the ground state becomes homogeneous as for small density. This behavior indicates a sharp similarity between nonlinear sigma models and their fermion cousins, the Gross-Neveu models which manifest a similar behavior. A paper about this has been submitted to the journal of high energy physics for publication and is currently under revision, and a second paper is preparation. The second research line that we have conducted has focused on analyzing the implication of the Mermin-Wagner theorem for the Casimir effect. With this work we have shown that the Casimir effect manifests anomalous features. Furthermore we have generalized certain consideration regarding the mass gap for nonlinear sigma models to high dimensionality, settling a recently debated topic. A paper about is currently in preparation.

Research Progress Status

令和元年度が最終年度であるため、記入しない。

Strategy for Future Research Activity

令和元年度が最終年度であるため、記入しない。

  • Research Products

    (5 results)

All 2019

All Journal Article (3 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 2 results,  Open Access: 3 results) Presentation (2 results)

  • [Journal Article] Ground state modulations in the CP(N-1) model2019

    • Author(s)
      Antonino Flachi, Guglielmo Fucci, Muneto Nitta, Satoshi Takada, and Ryosuke Yoshii
    • Journal Title

      PHYSICAL REVIEW D

      Volume: 100 Pages: 0850061-0850068

    • DOI

      10.1103/PhysRevD.100.085006

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Symmetry breaking and lattice kirigami: finite temperature effects2019

    • Author(s)
      Antonino Flachi and Vincenzo Vitagliano
    • Journal Title

      PHYSICAL REVIEW D

      Volume: 99 Pages: 1250101-1250109

    • DOI

      doi.org/10.1103/PhysRevD.99.125010

    • Peer Reviewed / Open Access
  • [Journal Article] Cosmic strings, deformed lattices and spontaneous symmetry breaking2019

    • Author(s)
      Antonino Flachi and Vincenzo Vitagliano
    • Journal Title

      J.Phys.Conf.Ser.

      Volume: 1275 Pages: 0120301-0120305

    • DOI

      10.1088/1742-6596/1275/1/012030

    • Open Access
  • [Presentation] Effective action and phase scan of the CP(N) model2019

    • Author(s)
      Antonino Flachi
    • Organizer
      JPS fall meeting Sept 2019
  • [Presentation] Introductory remarks2019

    • Author(s)
      Antonino Flachi
    • Organizer
      Avenues of quantum field theory in curved space

URL: 

Published: 2021-01-27  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi