Tuesday, 22 August, 2017
Miguel F. Paulos, Joao Penedones, Jonathan Toledo, Balt C. van Rees, Pedro Vieira

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...

Sunday, 13 August, 2017
Stepan Orevkov, Grigory Mikhalkin

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...

Thursday, 10 August, 2017
Anton Alekseev, Florian Naef

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-...

Thursday, 3 August, 2017
Christoph A. Keller, Beatrix J. Mühlmann

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....

Tuesday, 1 August, 2017
Vittorio Tansella, Camille Bonvin, Ruth Durrer, Basundhara Ghosh, Elena Sellentin

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-...

Tuesday, 1 August, 2017
Alexander Glazman, Ioan Manolescu

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...

Friday, 28 July, 2017
Hugo Duminil-Copin, Alexander Glazman, Ron Peled, Yinon Spinka

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...

Friday, 28 July, 2017
Gian Michele Graf, Clément Tauber

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...

Tuesday, 25 July, 2017
Julian Sonner, Manuel Vielma

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...

Monday, 24 July, 2017
Hugo Duminil-Copin, Vincent Tassion

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...

Monday, 24 July, 2017
Miguel S. Costa, Tobias Hansen, João Penedones

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...

Monday, 24 July, 2017
Alberto S. Cattaneo, Michele Schiavina, Iswaryaa Selliah

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....