String Perturbation Theory on the Schwinger-Keldysh Time Contour
Sep 8, 20205 pages
Published in:
- Phys.Rev.Lett. 125 (2020) 26, 261602
- Published: Dec 23, 2020
e-Print:
- 2009.03940 [hep-th]
DOI:
- 10.1103/PhysRevLett.125.261602 (publication)
View in:
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Abstract: (APS)
We perform the large-N expansion in the Schwinger-Keldysh formulation of nonequilibrium quantum systems with matrix degrees of freedom and study universal features of the anticipated dual string theory. We find a rich refinement of the topological genus expansion: In the original formulation, the future time instant where the forward and backward branches of the Schwinger-Keldysh time contour meet is associated with its own world sheet genus expansion. After the Keldysh rotation, the world sheets decompose into a classical and quantum part.Note:
- 5 pages, a few figures; v2: references added; v3: references updated, small clarifying comments added. Final version accepted in Phys. Rev. Lett
- Elementary Particles and Fields
- perturbation theory: string
- string model: duality
- topological
- rotation
References(33)
Figures(17)
- [1]
- [2]
- [3]
- [4]
- [5]
- [6]
- [7]
- [8]
- [9]
- [10]
- [11]
- [12]
- [13]
- [14]
- [15]
- [16]
- [17]
- [18]
- [19]
- [20]
- [21]
- [22]
- [23]
- [24]
- [25]