Zobrazeno 1 - 10
of 351
pro vyhledávání: '"Karagiannis, Georgios A"'
Autor:
Galyfos, George, Charalampopoulos, Georgios, Karagiannis, Georgios, Liasis, Nikolaos, Koncar, Igor, Siogkas, Panagiotis, Fotiadis, Dimitrios, Filis, Konstantinos, Sigala, Frangeska
Publikováno v:
In Annals of Vascular Surgery November 2024 108:325-332
Publikováno v:
Universe 2022, 8(1), 10
We revisit universal features of duality in linear and nonlinear relativistic scalar and Abelian 1-form theories with single or multiple fields, which exhibit ordinary or generalized global symmetries. We show that such global symmetries can be inter
Externí odkaz:
http://arxiv.org/abs/2112.00441
Publikováno v:
Phys. Rev. D 105, 104029 (2022)
We investigate physical implications of a gravitational analog of axion electrodynamics with a parity-violating gravitoelectromagnetic theta term. This is related to the Nieh-Yan topological invariant in gravity with torsion, in contrast to the well-
Externí odkaz:
http://arxiv.org/abs/2111.04388
Autor:
Karagiannis, Georgios
We review the construction of Galileon interactions involving a single two-column mixed-symmetry tensor of arbitrary degree in flat spacetime of arbitrary dimensions, in a reverse engineering spirit. By defining an appropriate Riemann-like tensor for
Externí odkaz:
http://arxiv.org/abs/2012.15668
We perform an in-depth analysis of the transformation rules under duality for couplings of theories containing multiple scalars, $p$-form gauge fields, linearized gravitons or $(p,1)$ mixed symmetry tensors. Following a similar reasoning to the deriv
Externí odkaz:
http://arxiv.org/abs/2012.08220
Replica exchange stochastic gradient Langevin dynamics (reSGLD) has shown promise in accelerating the convergence in non-convex learning; however, an excessively large correction for avoiding biases from noisy energy estimators has limited the potent
Externí odkaz:
http://arxiv.org/abs/2010.01084
Publikováno v:
Eur. Phys. J. C, 80 11 (2020) 1034
Motivated by the analogy between a weak field expansion of general relativity and Maxwell's laws of electrodynamics, we explore physical consequences of a parity violating $\theta$ term in gravitoelectromagnetism. This is distinct from the common gra
Externí odkaz:
http://arxiv.org/abs/2007.06632
We review the construction of Lagrangians for higher spin fields of mixed symmetry in the framework of graded geometry. The main advantage of the graded formalism in this context is that it provides universal expressions, in the sense that a given La
Externí odkaz:
http://arxiv.org/abs/2004.10730
Recent advancements in remote sensing technology and the increasing size of satellite constellations allows massive geophysical information to be gathered daily on a global scale by numerous platforms of different fidelity. The auto-regressive co-kri
Externí odkaz:
http://arxiv.org/abs/2004.01341