Buscar
Mostrando ítems 31-40 de 464
Super-Poincaré covariant quantization of the superstring
(2000-12-01)
Using pure spinors, the superstring is covariantly quantized. For the first time, massless vertex operators are constructed and scattering amplitudes are computed in a manifestly ten-dimensional super-Poincaré covariant ...
Quantum BMS transformations in conformally flat space-times and holography
(Springer, 2020-12)
We define and study asymptotic Killing and conformal Killing vectors in d-dimensional Minkowski, (A)dS, ℝ × Sd−1 and AdS2× Sd−2. We construct the associated quantum charges for an arbitrary CFT and show they satisfy a ...
Negative dimensional integration: Lab testing at two loops
(1997-12-01)
Negative dimensional integration method (NDIM) is a technique to deal with D-dimensional Feynman loop integrals. Since most of the physical quantities in perturbative Quantum Field Theory (pQFT) require the ability of ...
Negative dimensional integration: Lab testing at two loops
(1997-12-01)
Negative dimensional integration method (NDIM) is a technique to deal with D-dimensional Feynman loop integrals. Since most of the physical quantities in perturbative Quantum Field Theory (pQFT) require the ability of ...
La simetría del tiempo y la flecha cosmológica del tiempo: ¿muy pronto para una respuesta definitiva?
El texto aborda una solución propuesta a la pregunta sobre la dirección de la flecha cosmológica del tiempo, interpretando algunas de sus conclusiones y exponiendo algunos de sus problemas. Se exploran algunas respuestas ...
No radiative generation of Chern-Simons-like term in Lorentz-violating QED: dealing with IR divergences
(Journal of High Energy Physics, 2018)
Time-weighted Estimates In Lorentz Spaces And Self-similarity For Wave Equations With Singular Potentials
(Mathematical Sciences Publishers, 2017)
Classification of Boundary Gravitons in AdS3 Gravity
(Springer Heidelberg, 2014-05)
We revisit the description of the space of asymptotically AdS3 solutions of pure gravity in three dimensions with a negative cosmological constant as a collection of coadjoint orbits of the Virasoro group. Each orbit ...
Swanson Hamiltonian: non-PT-symmetry phase
(IOP Publishing, 2021-12)
In this work, we study the non-Hermitian Swanson Hamiltonian, particularly the non-parity-time symmetry phase. We use the formalism of Gel´fand triplet to construct the generalized eigenfunctions and the corresponding ...