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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.

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