Foundations of Physics

, Volume 44, Issue 6, pp 689–708 | Cite as

On the Possibility of Measuring the Unruh Effect

  • Igor Peña
  • Daniel Sudarsky


There is a persistent state of confusion regarding the nature of the Unruh effect. We will argue that, in contrast to some interpretations thereof, the effect does not represent any novel physics and that, by its very nature, the effect is fundamentally unmeasurable in all experiments of the kind that have been contemplated until now. Also, we discuss what aspects connected with this effect one might consider as possibilities to be explored empirically and what their precise meaning may be regarding the issue at hand.


Quantum field theory in curved spacetime Unruh effect  Quantum electrodynamics Accelerated frames 



I.P. is very grateful to UACM for his sabbatical support and for the kind hospitality at ICN-UNAM. D.S.’s work is supported in part by the CONACYT Grant No. 101712 and by UNAM-PAPIIT Grant IN107412. The authors are very grateful to Professor George Matsas and the anonymous referees for their useful comments.


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Copyright information

© Springer Science+Business Media New York 2014

Authors and Affiliations

  1. 1.Plantel Casa LibertadUniversidad Autónoma de la Ciudad de MéxicoMexicoMéxico
  2. 2.Instituto de Ciencias NuclearesUniversidad Nacional Autónoma de MéxicoMexicoMéxico

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