We consider constraints on the S-matrix of any gapped, Lorentz invariant quantum field theory in 3+1 dimensions due to crossing symmetry, analyticity and unitarity. We extremize cubic couplings...
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Tuesday, 22 August, 2017
arXiv:1708.06765
Sunday, 13 August, 2017
Oleg Viro introduced an invariant of rigid isotopy for real algebraic knots in RP3 which can be viewed as a first order Vassiliev invariant. In this paper we look at real algebraic...
arXiv:1708.03971
Thursday, 10 August, 2017
For an oriented 2-dimensional manifold \Sigma of genus g with n boundary components the space \mathbb{C}\pi_1(\Sigma)/[\mathbb{C}\pi_1(\Sigma), \mathbb{C}\pi_1(\Sigma)] carries the Goldman-...
arXiv:1708.03119
Thursday, 3 August, 2017
We study the spectrum of permutation orbifolds of 2d CFTs. We find examples where the light spectrum grows faster than Hagedorn, which is different from known cases such as symmetric orbifolds....
arXiv:1708.01258
Tuesday, 1 August, 2017
We derive an exact expression for the correlation function in redshift shells including all the relativistic contributions. This expression, which does not rely on the distant-observer or flat-...
arXiv:1708.00492
Tuesday, 1 August, 2017
We consider a self-avoiding walk model (SAW) on the faces of the square lattice \mathbb{Z}^2. This walk can traverse the same face twice, but crosses any edge at most once. The weight of a walk...
arXiv:1708.00395
Friday, 28 July, 2017
The loop O(n) model is a model for a random collection of non-intersecting loops on the hexagonal lattice, which is believed to be in the same universality class as the spin O(n) model. It has...
arXiv:1707.09335
Friday, 28 July, 2017
Floquet topological insulators describe independent electrons on a lattice driven out of equilibrium by a time-periodic Hamiltonian, beyond the usual adiabatic approximation. In dimension two...
arXiv:1707.09212
Tuesday, 25 July, 2017
The eigenstate thermalization hypothesis (ETH) explains how closed unitary quantum systems can exhibit thermal behavior in pure states. In this work we examine a recently proposed microscopic...
arXiv:1707.08013
Monday, 24 July, 2017
In this note, we discuss a generalization of Schramm's locality conjecture to the case of random-cluster models. We give some partial (modest) answers, and present several related open questions...
arXiv:1707.07626
Monday, 24 July, 2017
We consider the Regge limit of the CFT correlation functions ⟨JJOO⟩ and ⟨TTOO⟩, where J is a vector current, T is the stress tensor and O is some scalar operator. These correlation functions are...
arXiv:1707.07689
Monday, 24 July, 2017
The triadic description of General Relativity in three dimensions is known to be a BF theory. Diffeomorphisms, as symmetries, are easily re- covered on shell from the symmetries of BF theory....
arXiv:1707.07764