Expectation value of composite field $T{\bar T}$ in two-dimensional quantum field theory
By A. Zamolodchikov. 2004
403 citations recorded by the source corpus.
I show that the expectation value of the composite field $T{\bar T}$, built from the components of the energy-momentum tensor, is expressed exactly through the expectation value of the energy-momentum tensor itself. The relation is derived in two-dimensional quantum field theory under broad assumptions, and does not require integrability.
Subfields: Mathematical Physics, Nuclear and High Energy Physics
View Paper: https://www.semanticscholar.org/paper/fb6b85287efefde01e5d19070b10113ed50a09fb
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In Mathematical Physics
In Nuclear and High Energy Physics
- Monica Guica
- Mehrdad Mirbabayi
- V. Gorbenko
- S. Dubovsky
- Marika Taylor
- Kostas Skenderis
- J. Hartong
- Z. Komargodski
Citations in the corpus
- TT deformations in general dimensions (2018, positive): “A decade ago, Zamolochikov [1] explored deformations of two-dimensional conformal field theories by an operator that is quadratic in the stress energy tensor, called the T ¯ T operator.”
- Asymptotic fragility, near AdS2 holography and TT¯$$ T\overline{T} $$ (2017, background): “Also the factorization property of the T T̄ operator [17], providing the basis for the T T̄ deformation, is highly reminiscent of the large N factorization, which is semiclassical in its nature.”
- An integrable Lorentz-breaking deformation of two-dimensional CFTs (2017, background): “10) Expanding around z, one can show that Cn(z, z ) can only be z-independent if all contributions with n 6= n cancel out [20].”