Concept

Renormalisation

Publications associées (168)

Molecular-Atomic Transition along the Deuterium Hugoniot Curve with Coupled Electron-Ion Monte Carlo Simulations

We have performed simulations of the principal deuterium Hugoniot curve using coupled electron-ion Monte Carlo calculations. Using highly accurate quantum Monte Carlo methods for the electrons, we study the region of maximum compression along the Hugoniot, ...

Amer Physical Soc2015

Phonon-limited resistivity of graphene by first-principles calculations: Electron-phonon interactions, strain-induced gauge field, and Boltzmann equation

Nicola Marzari, Thibault Daniel Pierre Sohier

We use first-principles calculations, at the density-functional-theory (DFT) and GW levels, to study both the electron-phonon interaction for acoustic phonons and the "synthetic" vector potential induced by a strain deformation (responsible for an effectiv ...

American Physical Society2014

Koopmans-compliant functionals and their performance against reference molecular data

Nicola Marzari, Giovanni Borghi, Andrea Ferretti

Koopmans-compliant functionals emerge naturally from extending the constraint of piecewise linearity of the total energy as a function of the number of electrons to each fractional orbital occupation. When applied to approximate density-functional theory, ...

Amer Physical Soc2014

How Self-Interactions can Reconcile Sterile Neutrinos with Cosmology

Short baseline neutrino oscillation experiments have shown hints of the existence of additional sterile neutrinos in the eV mass range. However, such neutrinos seem incompatible with cosmology because they have too large of an impact on cosmic structure fo ...

Amer Physical Soc2014

Heterodyne spectroscopy of polariton spinor interactions

Benoît Marie Joseph Deveaud, Marcia Portella Oberli, Stéphane Trebaol, Naotomo Takemura

We report on spinor polariton interactions in GaAs based microcavities. This investigation is carried out by means of heterodyne polarized pump-probe spectroscopy. We show the dependence of the energy renormalization of the lower and upper polariton resona ...

American Physical Society2014

Spontaneously broken conformal symmetry: dealing with the trace anomaly

Alexander Monin, Roberta Armillis

The majority of renormalizable field theories possessing the scale invariance at the classical level exhibits the trace anomaly once quantum corrections are taken into account. This leads to the breaking of scale and conformal invariance. At the same time ...

Springer2013

Interplay of Dirac fermions and heavy quasiparticles in solids

Thorsten Schmitt

Many-body interactions in crystalline solids can be conveniently described in terms of quasiparticles with strongly renormalized masses as compared with those of non-interacting particles. Examples of extreme mass renormalization are on the one hand graphe ...

Nature Publishing Group2013

Model Evidence of an Anisotropic Chiral d plus id-Wave Pairing State for the Water-Intercalated NaxCoO2 center dot yH(2)O Superconductor

Ronny Thomale

Since its discovery, the superconducting phase in water-intercalated sodium cobaltates NaxCoO2 center dot yH(2)O (x similar to 0.3, y similar to 1.3) has posed fundamental challenges in terms of experimental investigation and theoretical understanding. By ...

Amer Physical Soc2013

Efficient DFT+U calculations of ballistic electron transport: Application to Au monatomic chains with a CO impurity

Gabriele Sclauzero

An efficient method for computing the Landauer-Buttiker conductance of an open quantum system within DFT + U is presented. The Hubbard potential is included in electronic-structure and transport calculations as a simple renormalization of the nonlocal pseu ...

Amer Physical Soc2013

A first top partner hunter's guide

Riccardo Rattazzi, Andrea Wulzer, Andrea De Simone

We provide a systematic effective lagrangian description of the phenomenology of the lightest top-partners in composite Higgs models. Our construction is based on symmetry, on selection rules and on plausible dynamical assumptions. The structure of the res ...

Springer2013

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