Tuesday, 18 September, 2018
Robert Brandenberger, Rodrigo R. Cuzinatto, Jürg Fröhlich, Ryo Namba

We propose a cosmological scenario involving a single scalar field, \varphi, that is a source of Dark Matter as well as Dark Energy. The Lagrangian density of \varphi contains a second field \...

Tuesday, 18 September, 2018
Erik Lindell, Thomas Willwacher

We describe new graphical models of the framed little disks operads which exhibit large symmetry dg Lie algebras.

Monday, 17 September, 2018
Samuel Favrod, Domenico Orlando, Susanne Reffert

In this note, we perform the large-charge expansion for non-relativistic systems with a global U(1) symmetry in 3+1 and 2+1 space-time dimensions, motivated by applications to the unitary Fermi...

Friday, 14 September, 2018
Artem Borin, Eugene Sukhorukov

In this work we investigate the phenomena associated with the new thresholds in the spectrum of excitations arising when different one-dimensional strongly interacting systems are voltage biased...

Sunday, 9 September, 2018
Alessio Figalli

The aim of this note is to review some recent developments on the regularity theory for the stationary and parabolic obstacle problems. After a general overview, we present some recent results...

Thursday, 6 September, 2018
Lorenz Halbeisen, Norbert Hungerbühler

We give an infinite family of congruent number elliptic curves, each with rank at least two, which are related to integral solutions of m^2=n^2+nl+l^2.

Thursday, 6 September, 2018
Niels Benedikter, Phan Thành Nam, Marcello Porta, Benjamin Schlein, Robert Seiringer

While Hartree-Fock theory is well established as a fundamental approximation for interacting fermions, it has been unclear how to describe corrections to it due to many-body correlations. In...

Tuesday, 4 September, 2018
Hugo Duminil-Copin, Shirshendu Ganguly, Alan Hammond, Ioan Manolescu

Let c_n = c_n(d) denote the number of self-avoiding walks of length n starting at the origin in the Euclidean nearest-neighbour lattice \mathbb{Z}^d. Let \mu = \lim_n c_n^{1/n} denote the...

Monday, 3 September, 2018
Martin Fraas, Gian Michele Graf, Lisa Hänggli

The measurement of a quantum system becomes itself a quantum-mechanical process once the apparatus is internalized. That shift of perspective may result in different physical predictions for a...

Wednesday, 29 August, 2018
Mikhail Khovanov, Louis-Hadrien Robert

We introduce and study combinatorial equivariant analogues of the Kronheimer--Mrowka homology theory of planar trivalent graphs.

Wednesday, 29 August, 2018
Norbert Hungerbühler, Micha Wasem

Given a real function f on an interval [a,b] satisfying mild regularity conditions, we determine the number of zeros of f by evaluating a certain integral. The integrand depends on f,f′ and f...

Tuesday, 28 August, 2018
Victor Gorbenko, Slava Rychkov, Bernardo Zan

We study complex CFTs describing fixed points of the two-dimensional Q-state Potts model with Q>4. Their existence is closely related to the weak first-order phase transition and walking RG...