Spectral continuity of vector mesons in dense QCD

Naoki Yamamoto, Tetsuo Hatsuda, Motoi Tachibana

Research output: Contribution to journalArticlepeer-review


Vector mesons in three-flavor quark matter are studied on the basis of the in-medium QCD sum rules. We derive formulas relating the masses of vector mesons to chiral and diquark condensates at low, intermediate and high density regions. Due to the mass splitting caused by the diquark condensate, the singlet vector meson disappears from the low-energy spectrum, while the octet vector mesons survive as light excitations with a mass comparable to the fermion gap, which is closely connected to the light gluonic modes at high density.

Original languageEnglish
Pages (from-to)84-87
Number of pages4
JournalProgress of Theoretical Physics Supplement
Issue number174
Publication statusPublished - 2008
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)


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