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COUPE SIGNED

COUPE - COUPling Excitations

Total Cost €

0

EC-Contrib. €

0

Partnership

0

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 COUPE project word cloud

Explore the words cloud of the COUPE project. It provides you a very rough idea of what is the project "COUPE" about.

interaction    interpreted    quasi    modern    spin    perturbation    interpretation    pertinent    describes    kinds    sources    secondary    science    structures    excitations    description    signatures    quasiparticle    radiation    confirm    resolution    dependent    material    body    spectroscopic    linked    improvement    ct    describe    gw    synchrotron    quasiparticles    consist    phonon    cumulant    signature    relies    plasmon    proposes    homogeneous    interactions    striking    systematic    dominant    few    satellites    connector    coupling    excitation    exciton    simulation    envisaged    condensed    resort    preliminary    transitions    characterization    precise    paris    inhomogeneous    approximation    boson    peaks    coupe    functional    severe    electron    first    latter    expansion    pure    model    superconducting    bosonic    combination    series    time    bosons    whereas    particle    discoveries    soleil    density    led    spectra    couples    followed    previously    inaccessible    coupled    fact    tddft    couple    magnetic    theory    materials    limitations    exist    ubiquitous    gas   

Project "COUPE" data sheet

The following table provides information about the project.

Coordinator
ECOLE POLYTECHNIQUE 

Organization address
address: ROUTE DE SACLAY
city: PALAISEAU CEDEX
postcode: 91128
website: http://www.polytechnique.fr

contact info
title: n.a.
name: n.a.
surname: n.a.
function: n.a.
email: n.a.
telephone: n.a.
fax: n.a.

 Coordinator Country France [FR]
 Total cost 184˙707 €
 EC max contribution 184˙707 € (100%)
 Programme 1. H2020-EU.1.3.2. (Nurturing excellence by means of cross-border and cross-sector mobility)
 Code Call H2020-MSCA-IF-2019
 Funding Scheme MSCA-IF-EF-ST
 Starting year 2020
 Duration (year-month-day) from 2020-05-01   to  2022-04-30

 Partnership

Take a look of project's partnership.

# participants  country  role  EC contrib. [€] 
1    ECOLE POLYTECHNIQUE FR (PALAISEAU CEDEX) coordinator 184˙707.00

Map

 Project objective

Spectroscopic characterization of matter is ubiquitous in modern material science. Increased resolution and precise control over radiation sources have led to numerous discoveries of previously inaccessible spectroscopic signatures, often linked to complex excitation processes. The main challenge in their interpretation is the fact that excitations are coupled through interactions. A striking signature for this is that spectra often consist of one or more dominant peaks (called quasi-particle), followed by a series of secondary structures (called satellites). The latter, which can be very strong, are pure interaction effects and may be interpreted in terms of coupling of a quasiparticle to a bosonic excitation of the material: a plasmon, exciton, phonon, or any other boson. To solve the electron-boson problem, and, first of all, to set up the description in terms of the most pertinent quasiparticles and bosons, is a major challenge of condensed matter theory. COUPE will face this challenge. Today, quasiparticles are most often described in the GW approximation to many-body perturbation theory, whereas for bosonic excitations one can resort to time-dependent density-functional theory (TDDFT). Only a few approaches exist to describe the coupled problem, with severe limitations. For example, a cumulant expansion on top of GW describes plasmon satellites, but cannot couple to spin excitations, and there is yet no systematic way for improvement. COUPE proposes a new combination of GW and TDDFT which couples quasiparticles to all kinds of bosonic excitations. This combination relies on a recently developed “connector theory” (CT), which allows using results from the homogeneous electron gas to describe inhomogeneous materials. COUPE will further apply it to the simulation of phase transitions in magnetic and superconducting materials under study at the synchrotron SOLEIL in Paris. Preliminary model results confirm the great potential of the approach envisaged in COUPE.

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The information about "COUPE" are provided by the European Opendata Portal: CORDIS opendata.

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