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On the possibility of superradiant neutrino emission by atomic condensates

Massimo Blasone, Loredana Gastaldo, Francesco Romeo

In a recent work [B. J. P. Jones and J. A. Formaggio, Phys. Rev. Lett. 135, 111801 (2025)], the possibility of superradiant neutrino emission from atomic condensates has been theoretically proposed. Subsequent analysis by Y. K. Lu, H. Lin, and W. Ketterle [arXiv:2510.21705] questioned this scenario, emphasizing the limiting role of the fermionic nature of the decayed atoms. In this study, we revisit the problem and discuss under which conditions collective emission phenomena might still emerge in cold-atom systems.In a recent work [B. J. P. Jones and J. A. Formaggio, Phys. Rev. Lett. 135, 111801 (2025)], the possibility of superradiant neutrino emission from atomic condensates has been theoretically proposed. Subsequent analysis by Y. K. Lu, H. Lin, and W. Ketterle [arXiv:2510.21705] questioned this scenario, emphasizing the limiting role of the fermionic nature of the decayed atoms. In this study, we revisit the problem and discuss under which conditions collective emission phenomena might still emerge in cold-atom systems.

quant-pharXiv:2511.22450Physical review. D/Physical review. D.Nov 28, 20250 citations

Reply to Comment on "Superradiant Phase Transitions and the Standard Description of Circuit QED"

Oliver Viehmann, Jan von Delft, Florian Marquardt

A Reply to the Comment by C. Ciuti and P. Nataf [arXiv:1112.0986v1] on our Letter "Superradiant Phase Transitions and the Standard Description of Circuit QED" [Phys. Rev. Lett. 107, 113602 (2011)].

arXiv:1202.2916Feb 14, 20123 citations

Superradiant Rayleigh scattering from a Bose–Einstein condensate with the incident laser along the long axis

Juntao Li, Xiaoji Zhou, Fan Yang +1 more

Physics Letters AApr 27, 200817 citations

Superradiant Neutrino Lasers from Radioactive Condensates

B. J. P. Jones, Joseph A. Formaggio

Superradiance emerges from collective spontaneous emission in optically pumped gases, and is characterized by photon emission enhancements of up to 1/4N^{2} in an N atom system. The gain mechanism derives from correlations developed within the decay medium rather than from stimulated emission as in lasing, so an analog of this process should be possible for fermionic final states. We introduce here the concept of superradiant neutrino emission from a radioactive Bose Einstein condensate, which can form the basis for a superradiant neutrino laser. A plausible experimental realization based on a condensate of electron-capture isotope ^{83}Rb could exhibit effective radioactive decay rates accelerated from 86.2 days to minutes in viably sized rubidium condensates of 10^{6} atoms.Superradiance emerges from collective spontaneous emission in optically pumped gases, and is characterized by photon emission enhancements of up to 1/4N^{2} in an N atom system. The gain mechanism derives from correlations developed within the decay medium rather than from stimulated emission as in lasing, so an analog of this process should be possible for fermionic final states. We introduce here the concept of superradiant neutrino emission from a radioactive Bose Einstein condensate, which can form the basis for a superradiant neutrino laser. A plausible experimental realization based on a condensate of electron-capture isotope ^{83}Rb could exhibit effective radioactive decay rates accelerated from 86.2 days to minutes in viably sized rubidium condensates of 10^{6} atoms.

arXiv:2412.11765Physical Review LettersJul 8, 20259 citations

Comment on "Possibility of superradiant neutrino emission by atomic condensate" by M. Blasone, L. Gastaldo and F. Romeo, Phys. Rev. D 113, 053010 (2026)

Wolfgang Ketterle, Hanzhen Lin, Yu-Kun Lu

We show that the recent proposal for superradiant emission of neutrinos cannot evade our proof that superradiant neutrino emission is fundamentally impossible. Pairing two fermions in a molecule does not remove the cancellation of interference terms in neutrino emission due to fermionic anticommutators.

quant-pharXiv:2606.04761Jun 4, 2026

Reply to “Comment on “Role of matter interactions in superradiant phenomena””

J. P. Mendonça, K. Jachymski, Y. Wang

Physical Review LettersOct 26, 20260 citations

Comment on arXiv:2510.21705 "Fundamental Impossibility of a Superradiant Neutrino Laser" and comment on arXiv:2510.21692 "Can Bose-Einstein Condensates Enhance Radioactive Decay?"

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Comment on arXiv:2510.21705 "Fundamental Impossibility of a Superradiant Neutrino Laser" and comment on arXiv:2510.21692 "Can Bose-Einstein Condensates Enhance Radioactive Decay?"

Abstract

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