ETH Institute for Theoretical Studies

output

20132022

most citedCosmology and Fundamental Physics with the Euclid Satellite

1k citations

researchers with a paper here

Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.

collaborating institutions

Showing 2016Show all

31 papers · 1 filter

hep-th2016★ 16 cited

Note on Reheating in G-inflation

Hossein Bazrafshan Moghaddam, Robert Brandenberger, Jun'ichi Yokoyama

We study particle production at the end of inflation in kinetically driven G-inflation model and show that, in spite of the fact that there are no inflaton oscillations and hence n…

cond-mat.mtrl-sci2016★ 217 cited

Dynamical Multiferroicity

Dominik Maximilian Juraschek, Michael Fechner, Alexander V. Balatsky +1

An appealing mechanism for inducing multiferroicity in materials is the generation of electric polarization by a spatially varying magnetization that is coupled to the lattice thro…

cond-mat.mtrl-sci2016★ 32 cited

Data Mining for Three-Dimensional Organic Dirac Materials: Focus on Space Group 19

R. Matthias Geilhufe, Stanislav S. Borysov, Adrien Bouhon +1

We combined the group theory and data mining approach within the Organic Materials Database that leads to the prediction of stable Dirac-point nodes within the electronic band stru…

cond-mat.supr-con2016★ 22 cited

Superconducting order parameter $π$ -phase shift in magnetic impurity wires

Kristofer Björnson, Alexander. V. Balatsky, Annica M. Black-Schaffer

It has previously been found that a magnetic impurity in a conventional $s$ -wave superconductor can give rise to a local $π$ -phase shift of the superconducting order parameter. By…

cond-mat.mes-hall2016★ 12 cited

First-order quantum phase transition in three-dimensional topological band insulators

Vladimir Juricic, D. S. L. Abergel, A. V. Balatsky

Topological states of matter are characterized by global topological invariants which change their value across a topological quantum phase transition. It is commonly assumed that…

math.PR2016★ 15 cited

The random pseudo-metric on a graph defined via the zero-set of the Gaussian free field on its metric graph

Titus Lupu, Wendelin Werner

We further investigate properties of the Gaussian free field (GFF) on the metric graph associated to a discrete weighted graph (where the edges of the latter are replaced by contin…

math.CO2016★ 46 cited

Upper bounds for sunflower-free sets

Eric Naslund, William F. Sawin

A collection of $k$ sets is said to form a $k$ -sunflower, or $Δ$ -system, if the intersection of any two sets from the collection is the same, and we call a family of sets $\mathcal…

cond-mat.supr-con2016★ 13 cited

A note on the upper critical field of Sr $_{2}$ RuO $_{4}$ under strain

Aline Ramires, Manfred Sigrist

In the light of the recently discussed mechanism for suppression of superconductivity in multi-orbital systems called inter-orbital effect, here we extend our analysis of the upper…

hep-th2016★ 1 cited

Doubly coupled matter fields in massive bigravity

Xian Gao, Lavinia Heisenberg

In the context of massive (bi-)gravity non-minimal matter couplings have been proposed. These couplings are special in the sense that they are free of the Boulware-Deser ghost belo…

hep-ph2016★ 4 cited

Stability of the pion string in a thermal and dense medium

Arjun Berera, Robert Brandenberger, Joel Mabillard +1

We investigate the stability of the pion string in a thermal bath and a dense medium. We find that stability is dependent on the order of the chiral transition. String core stabili…

math.DG2016★ 4 cited

A non-existence result for minimal catenoids in asymptotically flat spaces

Alessandro Carlotto, Andrea Mondino

We show that asymptotically Schwarzschildean 3-manifolds cannot contain minimal surfaces obtained by perturbative deformations of a Euclidean catenoid, no matter how small the ADM…

hep-ph2016★ 155 cited

Searching for galactic axions through magnetized media: the QUAX proposal

R. Barbieri, C. Braggio, G. Carugno +6

We present a proposal to search for QCD axions with mass in the 200 $μ$ eV range, assuming that they make a dominant component of dark matter. Due to the axion-electron spin couplin…

astro-ph.CO2016★ 1k cited

Cosmology and Fundamental Physics with the Euclid Satellite

Luca Amendola, Stephen Appleby, Anastasios Avgoustidis +69

Euclid is a European Space Agency medium class mission selected for launch in 2020 within the Cosmic Vision 2015 2025 program. The main goal of Euclid is to understand the origin o…

hep-th2016★ 20 cited

Particle Production in Ekpyrotic Scenarios

W. S. Hipolito-Ricaldi, Robert Brandenberger, Elisa G. M. Ferreira +1

We consider Parker particle production in the Ekpyrotic scenario (in particular in the New Ekpyrotic model) and show that the density of particles produced by the end of the phase…

cond-mat.supr-con2016★ 93 cited

Identifying detrimental effects for multi-orbital superconductivity - Application to Sr $_{2}$ RuO $_{4}$

Aline Ramires, Manfred Sigrist

We propose a general scheme to probe the compatibility of arbitrary pairing states with a given normal state Hamiltonian by the introduction of a concept called superconducting fit…

math.DG2016★ 10 cited

Index estimates for free boundary minimal hypersurfaces

Lucas Ambrozio, Alessandro Carlotto, Ben Sharp

We show that the Morse index of a properly embedded free boundary minimal hypersurface in a strictly mean convex domain of the Euclidean space grows linearly with the dimension of…

hep-th2016★ 138 cited

Beyond generalized Proca theories

Lavinia Heisenberg, Ryotaro Kase, Shinji Tsujikawa

We consider higher-order derivative interactions beyond second-order generalized Proca theories that propagate only the three desired polarizations of a massive vector field beside…

gr-qc2016★ 127 cited

Effective gravitational couplings for cosmological perturbations in generalized Proca theories

Antonio De Felice, Lavinia Heisenberg, Ryotaro Kase +3

We consider the finite interactions of the generalized Proca theory including the sixth-order Lagrangian and derive the full linear perturbation equations of motion on the flat Fri…

astro-ph.CO2016★ 10 cited

Cosmology in doubly coupled massive gravity: constraints from SNIa, BAO and CMB

Lavinia Heisenberg, Alexandre Refregier

Massive gravity in the presence of doubly coupled matter field via en effective composite metric yields an accelerated expansion of the universe. It has been recently shown that th…

gr-qc2016★ 10 cited

Cosmology in massive gravity with effective composite metric

Lavinia Heisenberg, Alexandre Refregier

This paper is dedicated to scrutinizing the cosmology in massive gravity. A matter field of the dark sector is coupled to an effective composite metric while a standard matter fiel…

hep-th2016★ 8 cited

New Quasidilaton theory in Partially Constrained Vielbein Formalism

Antonio De Felice, A. Emir Gümrükçüoğlu, Lavinia Heisenberg +2

In this work we study the partially constrained vielbein formulation of the new quasidilaton theory of massive gravity which couples to both physical and fiducial metrics simultane…

hep-th2016★ 385 cited

Bouncing Cosmologies: Progress and Problems

Robert Brandenberger, Patrick Peter

We review the status of bouncing cosmologies as alternatives to cosmological inflation for providing a description of the very early universe, and a source for the cosmological per…

gr-qc2016★ 182 cited

Cosmology in generalized Proca theories