📜 Theorem, law or theory

Unruh effect

Efecto Unruh

Date
1976 · confidence high
Place
Vancouver, British Columbia, Canada
Credited to
W. G. Unruh
Field
Cosmos & Earth

What was discovered

A quantum-field-theory prediction that a uniformly accelerating observer in vacuum perceives a thermal bath of particles that an inertial observer does not detect, described by Stephen Fulling (1973), Paul Davies (1975), and W. G. Unruh (1976).

What it led to

  • Quantum field theory in curved spacetime
  • Debate on the nature of the quantum vacuum
  • Studies of particle-accelerator radiation
  • Theoretical physics of quantum gravity
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Sources✓ verified 2026-09-28