
Семинар 28 ноября 2017. Martin Krssak. Modified Gravity Theories as Analogues of Nonlinear Electrodynamics
28 ноября 2017, в 12:45 Кафедра физики высоких энергий и элементарных частиц Martin Krssak (Мартин Кршшак) (Университет Тарту, Эстония) Modified Gravity Theories as Analogues of Nonlinear Electrodynamics Recently various modifications and extensions of general relativity became a popular subject of study due to various phenomenological and theoretical reasons. One of such approaches is the socalled teleparallel gravity, which originates with Einstein's 1920s attempts for unified field theory, where instead of the usual Riemannian geometry we use the geometry with ``distant parallelism" (a.k.a. teleparallel geometry). An advantage of this approach is that it reveals close structural analogies to electrodynamics, which are more hidden in the usual formulation where gravity is attributed to the curvature of spacetime. I will briefly introduce these models and show how every teleparallel theory of gravity with second order field equations can be formulated in an analogous way to the axiomatic construction of theories of electrodynamics. I will explicitly demonstrate this construction for some popular models as f(T) or teleparallel dark energy models.
Отправлено Fri, 24 Nov 2017 13:42:10 +0400
