семинар кафедры ФВЭиЭЧ 19.01.16
by: , @ Sat, 16 Jan 2016 17:43:08 +0400
Дорогие коллеги,
в следующий вторник, 19 января, в 12:40 состоится семинар кафедры
физики высоких энергий и элементарных частиц
Tomi Sebastian Koivisto
(Nordita, Stockholm)
Nonlocal theories of gravity
Non-spooky actions at distance for gravity are presented. The
propagator for generic metric theories is derived and it is shown that
ghosts can be avoided in renormalisable higher derivative gravity by
nonlocal, i.e. infinite-order derivative operators. Theories with
nonlocal infrared modifications of gravity are also discussed, reviewing
several recently proposed models that attempt to address the problems of
the cosmological constant and dark energy.
Всего хорошего,
Алексей Головнев.