Expectation value of $$ \mathrm{T}\overline{\mathrm{T}} $$ operator in curved spacetimes
Expectation value of $$ \mathrm{T}\overline{\mathrm{T}} $$ operator in curved spacetimes
复制标题
弯曲时空中 $$ mathrm{T}overline{mathrm{T}} $$ 算子的期望值
DOI:
10.1007/jhep02(2020)094
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发表时间:
2019
影响因子:
5.4
通讯作者:
Yunfeng Jiang
中科院分区:
文献类型:
--
作者:
Yunfeng Jiang
Abstract
We study the expectation value of the $$ \mathrm{T}\overline{\mathrm{T}} $$
T
T
¯
operator in maximally symmetric spacetimes. We define an diffeomorphism invariant biscalar whose coinciding limit gives the expectation value of the $$ \mathrm{T}\overline{\mathrm{T}} $$
T
T
¯
operator. We show that this biscalar is a constant in flat spacetime, which reproduces Zamolodchikov’s result in 2004. For spacetimes with non-zero curvature, we show that this is no longer true and the expectation value of the $$ \mathrm{T}\overline{\mathrm{T}} $$
T
T
¯
operator depends on both the one- and two-point functions of the stress-energy tensor.
影响因子:
5.4
作者:
Kitaev, Alexei;Suh, S. Josephine
通讯作者:
Suh, S. Josephine