• Renormalized energy-momentum tensor of λ Φ4 theory in curved space-time

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      https://www.ias.ac.in/article/fulltext/pram/060/06/1161-1169

    • Keywords

       

      Curved space-time; scalar field; enery-momentum tensor; effective potential

    • Abstract

       

      Divergenceless expression for the energy-momentum tensor of scalar field is obtained using the momentum cut-off regularization technique. We consider a scalar field with quartic self-coupling in a spatially flat (3+1)-dimensional Robertson-Walker space-time, having arbitrary mass and coupled to gravity. As special cases, energy-momentum tensor for conformal and minimal coupling are also obtained. The energy-momentum tensor is observed to exhibit trace anomaly in curved space-time

    • Author Affiliations

       

      K G Arun1 Minu Joy1 V C Kuriakose1

      1. Department of Physics, Cochin University of Science and Technology, Cochin - 682 022, India
    • Dates

       
  • Pramana – Journal of Physics | News

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      Posted on July 25, 2019

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