Floquet vacuum engineering: Laser-driven chiral soliton lattice in the QCD vacuum

Akihiro Yamada, Naoki Yamamoto

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

What happens to the QCD vacuum when a time-periodic circularly polarized laser field with a sufficiently large intensity and frequency is applied? Based on the Floquet formalism for periodically driven systems and the systematic low-energy effective theory of QCD, we show that for a sufficiently large frequency and above a critical intensity, the QCD vacuum is unstable against the chiral soliton lattice of pions; a crystalline structure of topological solitons that spontaneously breaks parity and continuous translational symmetries. Our work would pave the way for novel “Floquet vacuum engineering.”

Original languageEnglish
Article number054041
JournalPhysical Review D
Volume104
Issue number5
DOIs
Publication statusPublished - 2021 Sep 1

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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