Zobrazeno 1 - 10
of 43
pro vyhledávání: '"Khandker, Zuhair U."'
We use Lightcone Conformal Truncation (LCT) -- a version of Hamiltonian truncation -- to study the nonperturbative, real-time dynamics of $\phi^4$-theory in 2+1 dimensions. This theory has UV divergences that need to be regulated. We review how, in a
Externí odkaz:
http://arxiv.org/abs/2010.09730
Autor:
Anand, Nikhil, Fitzpatrick, A. Liam, Katz, Emanuel, Khandker, Zuhair U., Walters, Matthew T., Xin, Yuan
We both review and augment the lightcone conformal truncation (LCT) method. LCT is a Hamiltonian truncation method for calculating dynamical quantities in QFT in infinite volume. This document is a self-contained, pedagogical introduction and "how-to
Externí odkaz:
http://arxiv.org/abs/2005.13544
We consider Lorentzian CFT Wightman functions in momentum space. In particular, we derive a set of reference formulas for computing two- and three-point functions, restricting our attention to three-point functions where the middle operator (correspo
Externí odkaz:
http://arxiv.org/abs/1911.02573
We investigate the quantum null energy condition (QNEC) in holographic CFTs, focusing on half-spaces and particular classes of states. We present direct, and in certain cases nonperturbative, calculations for both the diagonal and off- diagonal varia
Externí odkaz:
http://arxiv.org/abs/1803.03997
We prove a conjectured lower bound on $\left< T_{--}(x) \right>_\psi$ in any state $\psi$ of a relativistic QFT dubbed the Quantum Null Energy Condition (QNEC). The bound is given by the second order shape deformation, in the null direction, of the g
Externí odkaz:
http://arxiv.org/abs/1706.09432
We study 1+1 dimensional $\phi^4$ theory using the recently proposed method of conformal truncation. Starting in the UV CFT of free field theory, we construct a complete basis of states with definite conformal Casimir, $\mathcal{C}$. We use these sta
Externí odkaz:
http://arxiv.org/abs/1704.04500
We present a new framework for studying conformal field theories deformed by one or more relevant operators. The original CFT is described in infinite volume using a basis of states with definite momentum, $P$, and conformal Casimir, $\mathcal{C}$. T
Externí odkaz:
http://arxiv.org/abs/1604.01766
Motivated by applications to the study of ultracold atomic gases near the unitarity limit, we investigate the structure of the operator product expansion (OPE) in non-relativistic conformal field theories (NRCFTs). The main tool used in our analysis
Externí odkaz:
http://arxiv.org/abs/1412.8507
Publikováno v:
JHEP 1408 (2014) 049
We use supershadow methods to derive new expressions for superconformal blocks in 4d $\mathcal{N}=1$ superconformal field theories. We analyze the four-point function $\langle\mathcal{A}_1 \mathcal{A}_2^\dagger \mathcal{B}_1 \mathcal{B}_2^\dagger\ran
Externí odkaz:
http://arxiv.org/abs/1404.5300
Autor:
Fitzpatrick, A. Liam, Kaplan, Jared, Khandker, Zuhair U., Li, Daliang, Poland, David, Simmons-Duffin, David
Publikováno v:
JHEP 1408 (2014) 129
We develop techniques for computing superconformal blocks in 4d superconformal field theories. First we study the super-Casimir differential equation, deriving simple new expressions for superconformal blocks for 4-point functions containing chiral o
Externí odkaz:
http://arxiv.org/abs/1402.1167