Korshunov instantons out of equilibrium

M. Titov, D. B. Gutman

Research output: Contribution to journalArticlepeer-review

8 Scopus citations


Zero-dimensional dissipative action possesses nontrivial minima known as Korshunov instantons. They have been known so far only for imaginary time representation that is limited to equilibrium systems. In this work we reconstruct and generalise Korshunov instantons using real-time Keldysh approach. This allows us to formulate the dissipative action theory for generic nonequilibrium conditions. Possible applications of the theory to transport in strongly biased quantum dots are discussed.

Original languageEnglish
Article number155428
JournalPhysical Review B
Issue number15
StatePublished - 22 Apr 2016

Bibliographical note

Funding Information:
This work has been supported by ISF (Grant No. 584/14), GIF (Grant No. 1167-165.14/2011), the Dutch Science Foundation NWO/FOM 13PR3118, and by the EU Network FP7-PEOPLE-2013-IRSES Grant No. 612624 "InterNoM". We acknowledge useful discussions with R. Berkovits, L. Bitton, I. Burmistrov, A. Frydman, I. Gornyi, A. Kamenev, A. Mirlin, R. Santos, and E. Dalla Torre.

Publisher Copyright:
©2016 American Physical Society.


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