Two point correlation function in integrable QFT with anticrossing symmetry, Phys - Delfino, Mussardo - 1994 () Citation Context ...[4]-[29] and references therein). Once the form factors of a certain operator
For conformal field theory (CFT) on torus, the partition function with the deformation can be computed and it remains modular invariant. Further, one can even obtain Cardy-like formula in deformed CFTs. Meanwhile, there were also various other perspectives on the T T¯ deformation [29–42]...
For simplicity, we regard the T T¯/JT¯-deformed CFTs as perturbation theories of CFTs and compute the first order correction of the correlation function due to the T T¯/JT¯-deformation. Since T T¯/JT¯ are conserved quantities, the Ward identities are held in the deformed ...
Fig. 1. Results for the OTO correlation function. Top: At high temperatures, T > M−1 and large times, t > 2πM, the function crosses over from exponential to power-law decay with an exponent t−6. Bottom: at low temperatures, T < M−1 the function is nowhere exponential. At...
The correlation function of these fields is given by < G R 1 µ 1 (z 1 ) . . . G R N µ N (z N ) >=< G R 1 (z 1 ) . . . G R N (z N ) > N i (z i −z j ) − µ i µ j k . 7 This is in agreement with the results of refs.[7, 8]....
where is a thermal state in the Gibbs form, in which is the partition function. We can explicitly compute aswhere is the norm of the Bloch vector associated with as ρS = (1/2)(I + r · σ) (here σ = (σx, σy, σz)), and from equation (51) we have...
In these methods, features are first ex- tracted for each instance, and then an aggregation function is used to aggregate the features of each instance to ob- tain the bag feature, which is used to train a bag classifier. Attention-based aggregation method...
We consider the detection in the case of a simple QFT model with a suitable interaction to exact treatment, consisting of a quantum scalar field coupled linearly to a classical scalar source. We then evaluate the response function to the field quanta of two-level point-like quantum model ...
Field Theory (QFT), supplemented by operator-field evolution of the Langevin type, we discuss two issues concerning the Bose Einstein correlations (BEC): the origin of different possible coherent behaviour of the emitting source and the origin of the observed shape of the BEC function $C_2(Q...
We provide a toolkit for computing the symmetry-resolved modular correlation function of the charge density operator in free fermionic theories. As an application, we compute this correlation function for a 1 + 1-dimensional free massless Dirac field theory and find that it is independent of the ...