Entropy and area

Mar, 1993
8 pages
Published in:
  • Phys.Rev.Lett. 71 (1993) 666-669
e-Print:
Report number:
  • LBL-33754,
  • CFPA-93-02

Citations per year

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Abstract:
The ground state density matrix for a massless free field is traced over the degrees of freedom residing inside an imaginary sphere; the resulting entropy is shown to be proportional to the area (and not the volume) of the sphere. Possible connections with the physics of black holes are discussed.
  • field theory: scalar
  • dimension: 0
  • ground state
  • density matrix
  • model: oscillator
  • entropy
  • black hole
  • radiation: Hawking