A comment on boundary conditions of bosonic Lagrange multipliers at finite temperature

Thomaz M., Ipekoǧlu Y.

European Journal of Physics, cilt.17, sa.2, ss.82-84, 1996 (Scopus) identifier

  • Yayın Türü: Makale / Derleme
  • Cilt numarası: 17 Sayı: 2
  • Basım Tarihi: 1996
  • Doi Numarası: 10.1088/0143-0807/17/2/008
  • Dergi Adı: European Journal of Physics
  • Derginin Tarandığı İndeksler: Scopus
  • Sayfa Sayıları: ss.82-84
  • Orta Doğu Teknik Üniversitesi Adresli: Evet

Özet

The partition function defined in the usual way is a gauge-dependent quantity. However, the ansatz of Bernard and Gross et al leaves it gauge invariant. We use this ansatz for the partition function to show that Lagrange multipliers (non-physical bosonic fields) are not restricted to satisfying any boundary conditions in the path integral at finite temperature. We take a quantum mechanical model to illustrate that boundary conditions satisfied by non-physical fields depend on the choice of 'gauge'.