Gravitational shock waves and vacuum fluctuations

Hortacsu M., Ulker K.

CLASSICAL AND QUANTUM GRAVITY, cilt.15, sa.5, ss.1415-1420, 1998 (SCI-Expanded) identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 15 Sayı: 5
  • Basım Tarihi: 1998
  • Doi Numarası: 10.1088/0264-9381/15/5/022
  • Dergi Adı: CLASSICAL AND QUANTUM GRAVITY
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.1415-1420
  • İstanbul Teknik Üniversitesi Adresli: Hayır

Özet

We show that the vacuum expectation value of the stress-energy tensor of a scalar particle on the background of a spherical gravitational shock wave does not give a finite expression in second-order perturbation theory, in contrast to the case seen for the impulsive wave. No infrared divergences appear at this order. This result shows that there is a qualitative difference between the shock and impulsive wave solutions which is not exhibited in first order.