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Analogy between the Laser Threshold Region and a Second-Order Phase Transition
Abstract
An analogy between the laser threshold region and a second-order phase transition is presented. The electric field acts as the order parameter for the laser while the atomic-population inversion plays the role of a temperature. The quantum-statistical theory of a laser including a symmetry-breaking external signal is discussed in order to establish a correspondence with the problem of a ferromagnet (treated in the molecular-field approximation) situated in an externally applied magnetic field. It is demonstrated that the results of the laser analysis may be discussed in terms of an energy function which is similar to the free energy of a thermodynamic system.
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Citations
Cited by
Carusotto, I., & Ciuti, C. (2013) · Reviews of Modern Physics · doi:10.1103/revmodphys.85.299 · Cited by 1,996
Keldysh field theory for driven open quantum systems
Sieberer, L. M., Buchhold, M., & Diehl, S. (2016) · Reports on Progress in Physics · doi:10.1088/0034-4885/79/9/096001 · Cited by 568
A soluble model for diffusion in a bistable potential
van Kampen, N. G. (1977) · Journal of Statistical Physics · doi:10.1007/bf01268919 · Cited by 288
Carusotto, I., & Ciuti, C. (2005) · Physical Review B · doi:10.1103/physrevb.72.125335 · Cited by 111
Non-equilibrium Bose–Einstein condensation in photonic systems
Bloch, J., Carusotto, I., & Wouters, M. (2022) · Nature Reviews Physics · doi:10.1038/s42254-022-00464-0 · Cited by 105
Metadata
- Authors
- DeGiorgio, V., & Scully, M. O.
- Venue
- Physical Review A
- Publisher
- American Physical Society (APS)
- Published
- 1970-10-01
- Volume
- 2
- Issue
- 4
- Pages
- 1170-1177
- ISSN
- 0556-2791 (ISSN-L)
- OpenAlex
- W2009264251
- Cited by
- 398
- References
- 0
- FWCI
- 7.35
- Type
- journal article
- Language
- en
- Open access
- closed
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- CoChat. (2026). Citation check: Analogy between the Laser Threshold Region and a Second-Order Phase Transition. https://app.cochat.ai/papers/10.1103/physreva.2.1170
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- DeGiorgio, V., & Scully, M. O. (1970). Analogy between the Laser Threshold Region and a Second-Order Phase Transition. Physical Review A. https://doi.org/10.1103/physreva.2.1170
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