Monday, 8 July, 2019
Jérémie Francfort, Basundhara Ghosh, Ruth Durrer

Even though we know that physical observations are frame independent, the frame dependence of cosmological perturbations is relatively subtle and has led to confusion in the past. In this paper...

Monday, 8 July, 2019
Domenico Orlando, Susanne Reffert, Yuta Sekiguchi, Kentaroh Yoshida

In this note, we study the action of O(d,d) transformations on the integrable structure of two-dimensional non-linear sigma models via the doubled formalism. We construct the Lax pairs...

Wednesday, 3 July, 2019
Enis Belgacem, Yves Dirian, Andreas Finke, Stefano Foffa, Michele Maggiore

We discuss a modified gravity model which fits cosmological observations at a level statistically indistinguishable from \LambdaCDM and at the same time predicts very large deviations from...

Tuesday, 2 July, 2019
Enis Belgacem, Yves Dirian, Stefano Foffa, Eric J. Howell, Michele Maggiore, Tania Regimbau

Gravitational-wave (GW) detectors can contribute to the measurement of cosmological parameters and to testing the dark-energy sector of alternatives to \LambdaCDM, by using standard sirens. In...

Monday, 1 July, 2019
Nikolay Gromov, Amit Sever

In our previous paper we derived the holographic dual of the planar fishnet CFT in four dimensions. The dual model becomes classical in the strongly coupled regime of the CFT and takes the form...

Wednesday, 26 June, 2019
Edvin G. Idrisov, Ivan P. Levkivskyi, Eugene V. Sukhorukov

We present the theoretical model of the "quantum ammeter", a device that is able to measure the full counting statistics of an electron current at quantum time scales. It consists of an Ohmic...

Wednesday, 19 June, 2019
Joan Elias Miro, Andrea L. Guerrieri, Aditya Hebbar, Joao Penedones, Pedro Vieira

We bootstrap the S-matrix of massless particles in unitary, relativistic two dimensional quantum field theories. We find that the low energy expansion of such S-matrices is strongly constrained...

Thursday, 13 June, 2019
Alain-Sol Sznitman

We investigate certain large deviation asymptotics concerning random interlacements in Z^d, d bigger or equal to 3. We find the principal exponential rate of decay for the probability that the...

Tuesday, 11 June, 2019
Grigory Mikhalkin, Johannes Rau

To every rational complex curve C \subset (\mathbf{C}^\times)^n we associate a rational tropical curve \Gamma \subset \mathbf{R}^n so that the amoeba \mathcal{A}(C) \subset \mathbf{R}^n of C is...

Monday, 3 June, 2019
Giulio Ciraolo, Alessio Figalli, Alberto Roncoroni

Given n \geq 2 and 1<p<n, we consider the critical p-Laplacian equation \Delta_p u + u^{p^*-1}=0, which corresponds to critical points of the Sobolev inequality. Exploiting the moving...

Thursday, 30 May, 2019
Giovanni Felder, David Kazhdan, Alexander Polishchuk

The supermeasure whose integral is the genus g vacuum amplitude of superstring theory is potentially singular on the locus in the moduli space of supercurves where the corresponding even theta-...

Wednesday, 29 May, 2019
Enea Di Dio, Ruth Durrer, Giuseppe Fanizza, Giovanni Marozzi

We investigate the weak lensing corrections to the CMB polarization anisotropies. We concentrate on the effect of rotation and show that the rotation of polarisation is a true physical effect...

Phys. Rev. D 100, 043508 (2019)