3,845 research outputs found
Holographic complexity and non-commutative gauge theory
We study the holographic complexity of noncommutative field theories. The
four-dimensional noncommutative super Yang-Mills theory with
Moyal algebra along two of the spatial directions has a well known holographic
dual as a type IIB supergravity theory with a stack of D3 branes and
non-trivial NS-NS B fields. We start from this example and find that the late
time holographic complexity growth rate, based on the "complexity equals
action" conjecture, experiences an enhancement when the non-commutativity is
turned on. This enhancement saturates a new limit which is exactly 1/4 larger
than the commutative value. We then attempt to give a quantum mechanics
explanation of the enhancement. Finite time behavior of the complexity growth
rate is also studied. Inspired by the non-trivial result, we move on to more
general setup in string theory where we have a stack of D branes and also
turn on the B field. Multiple noncommutative directions are considered in
higher cases
Constructing the general partial waves and renormalization in EFT
We construct the general partial wave amplitude basis for the
scattering, which consists of Poincar\'e Clebsch-Gordan coefficients, with
Lorentz invariant forms given in terms of spinor-helicity variables. The inner
product of the Clebsch-Gordan coefficients is defined, which converts on-shell
phase space integration into an algebraic problem. We also develop the
technique of partial wave expansions of arbitrary amplitudes, including those
with infrared divergence. These are applied to the computation of anomalous
dimension matrix for general effective operators, where unitarity cuts for the
loop amplitudes, with an arbitrary number of external particles, are obtained
via partial wave expansion.Comment: 6 pages, 1 figure, 1 tabl
Rotating traversable wormholes in AdS
In this work we explore the effect of rotation in the size of a traversable
wormhole obtained via a double trace boundary deformation. We find that at
fixed temperature the size of the wormhole increases with the angular momentum
. The amount of information that can be sent through the wormhole
increases as well. However, for the type of interaction considered, the
wormhole closes as the temperature approaches the extremal limit. We also
briefly consider the scenario where the boundary coupling is not spatially
homogeneous and show how this is reflected in the wormhole opening.Comment: 26 pages, 13 figure
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