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pro vyhledávání: '"Cottrell, William"'
Given two copies of any quantum mechanical system, one may want to prepare them in the thermofield double state for the purpose of studying thermal physics or black holes. However, the thermofield double is a unique entangled pure state and may be di
Externí odkaz:
http://arxiv.org/abs/1811.11528
Autor:
Cottrell, William, Hashimoto, Akikazu
We study the UV dynamics of $\mu T \bar T$ deformed conformal field theories formulated as a deformation of generating functions. We explore the issue of non-perturbative completion of the $\mu$ expansion by deriving an integral expression using the
Externí odkaz:
http://arxiv.org/abs/1801.09708
We extend the analysis of boundedness and stability, initiated for scalar fields in anti de Sitter space in a previous work, to the case of vector fields. We show that the double trace deformation of Marolf and Ross is distinct from the double trace
Externí odkaz:
http://arxiv.org/abs/1711.01257
Publikováno v:
Phys. Rev. D 97, 025002 (2018)
In this work, we consider tunneling between non-metastable states in gravitational theories. Such processes arise in various contexts, e.g., in inflationary scenarios where the inflaton potential involves multiple fields or multiple branches. They ar
Externí odkaz:
http://arxiv.org/abs/1710.04737
Autor:
Cottrell, William, Montero, Miguel
In this note we investigate the role of Lloyd's computational bound in holographic complexity. Our goal is to translate the assumptions behind Lloyd's proof into the bulk language. In particular, we discuss the distinction between orthogonalizing and
Externí odkaz:
http://arxiv.org/abs/1710.01175
Scalar fields on the bulk side of AdS/CFT correspondence can be assigned unconventional boundary conditions, related to the conventional one by Legendre transform. One can further perform double trace deformations which relate the two boundary condit
Externí odkaz:
http://arxiv.org/abs/1709.00445
Motivated by the desire to improve our understanding of the Weak Gravity Conjecture, we compute the one-loop correction of charged particles to the geometry and entropy of extremal black holes in 4d. We find that fermion loops provide evidence for th
Externí odkaz:
http://arxiv.org/abs/1611.06270
The Coleman formula for vacuum decay and bubble nucleation has been used to estimate the tunneling rate in models of axion monodromy in recent literature. However, several of Coleman's original assumptions do not hold for such models. Here we derive
Externí odkaz:
http://arxiv.org/abs/1607.00037
Autor:
Cottrell, William, Hashimoto, Akikazu
We generalize the construction by Aharony, Hashimoto, Hirano, and Ouyang of ${\cal N}=4$ quiver gauge theory with gauge group $U(N+M) \times U(N)$, $k$ fundamentals charged under $U(N)$ and bi-fundamentals, to the case with gauge group $\prod_{i=1}^{
Externí odkaz:
http://arxiv.org/abs/1602.04765
In this note we consider ${\cal N}=4$ SYM theories in 2+1 dimensions with gauge group $U(N)\times U(M)$ and $k$ hypermultiplets charged under the $U(N)$. When $k > 2(N-M)$, the theory flows to a superconformal fixed point in the IR. Theories with $k
Externí odkaz:
http://arxiv.org/abs/1509.04749