Zobrazeno 1 - 10
of 24
pro vyhledávání: '"Schaub, Vladimir"'
We present a collection of numerical bootstrap computations for 3d CFTs with a U(1) global symmetry. We test the accuracy of our method and fix conventions through a computation of bounds on the OPE coefficients for low-lying operators in the free fe
Externí odkaz:
http://arxiv.org/abs/2412.01608
Autor:
Schaub, Vladimir
We construct unitary irreducible representation of the de Sitter group, that forms the basis for the study of $dS_{d+1}$ QFT. Using the intertwining kernel analysis, we discuss bosonic symmetric tensor, and fermionic higher-spinors. Particular care i
Externí odkaz:
http://arxiv.org/abs/2405.01659
We use the numerical conformal bootstrap to study boundary quantum electrodynamics, the theory of a four dimensional photon in a half space coupled to charged conformal matter on the boundary. This system is believed to be a boundary conformal field
Externí odkaz:
http://arxiv.org/abs/2312.07692
Autor:
Schaub, Vladimir
We explore analytical aspects of correlators involving Dirac spinors in $d+1$- dimensional de Sitter space. Adapting the formalism of Sleight and Taronna, we show how to relate processes involving fermions in the in-in formalism to equivalent Witten
Externí odkaz:
http://arxiv.org/abs/2302.08535
In boundary conformal field theories, global symmetries can be broken by boundary conditions, generating a homogeneous conformal manifold. We investigate these geometries, showing they have a coset structure, and give fully worked out examples in the
Externí odkaz:
http://arxiv.org/abs/2301.10789
We use the equations of motion in combination with crossing symmetry to constrain the properties of interacting fermionic boundary conformal field theories. This combination is an efficient way of determining operator product expansion coefficients a
Externí odkaz:
http://arxiv.org/abs/2209.05511
Autor:
Pethybridge, Ben, Schaub, Vladimir
We construct the Wightman function for symmetric traceless tensors and Dirac fermions in dS$_{d+1}$ in a coordinate and index free formalism using a $d+2$ dimensional ambient space. We expand the embedding space formalism to cover spinor and tensor f
Externí odkaz:
http://arxiv.org/abs/2111.14899
In the context of boundary conformal field theory, we derive a sum rule that relates two and three point functions of the displacement operator. For four dimensional conformal field theory with a three dimensional boundary, this sum rule in turn rela
Externí odkaz:
http://arxiv.org/abs/2107.11604
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