H2020Индивидуална стипендия2021–2023

UltraComp · Unconventional Phases of Ultracold Quantum Matter with Competing Interactions

„Хоризонт 2020“ — Действия „Мария Склодовска-Кюри“

Период: 2021-04-01 → 2023-03-31
Финансиране от ЕС: 172 932 €
Участници: 1
Схема: MSCA-IF

Линиите свързват координатора с партньорите.

Накратко на български

Екзотични състояния на ултрастудена материя, като супертвърдите тела, които едновременно текат без триене и имат кристална структура, са в центъра на анализа. Работата помага да се разбере как взаимодействието между различни енергии създава материя с противоречиви свойства.

Този кратък обзор е генериран от изкуствен интелект

Кратко обяснение, генерирано от езиков модел по текста на CORDIS. Оригиналът е по-долу.

Резултати накратко

Unconventional Phases of Ultracold Quantum Matter with Competing Interactions

The goal of the project Unconventional Phases of Ultracold Quantum Matter with Competing Interactions (UltraComp) was to explore new phases of matter originating from the interplay between inter-particle interactions with either kinetic energy (modified by an externally imposed coupling between the particle’s spin and its momentum) or with intrinsic quantum fluctuations. The competition between these interactions could give rise to new and exotic phases with seemingly contradictory features. One such example is the supersolid, a material which can flow without friction as a superfluid while keeping a periodic structure as a crystal. The objectives of this project were: (1) to create a supersolid in a spin-orbit coupled Bose-Einstein condensate and explore its properties. (2) to unite the characteristics of the novel supersolid with a quantum droplet, an exotic system stabilized from collapse by quantum fluctuations, to investigate a never seen phase: the supersolid-striped droplet. The importance of this research lies in understanding nature and how the interplay between different energies can give rise to phases of matter with very different and sometimes seemingly contradictory properties. The experimental study of these phases has been a goal for over 50 years [A. F. Andreev and I. M. Lifshitz, Sov. Phys. JETP 29, 1107 (1969), A. J. Leggett, Phys. Rev. Lett. 25, 1543 (1970)], and it is only recently that we have been able to study these phases and compare them across different experimental platforms.

Текст от CORDIS, на английски · Данни: CORDIS, © Европейски съюз

Цел на проекта

The phases of matter are determined by competing interactions. For example, in our everyday experience, a fluid will be gas or liquid depending on the interplay of attractive interatomic interactions and short-range repulsion. In the case of dilute quantum fluids, the interatomic distances are much larger than the range of the interactions that bind conventional liquids; thus, this phase transition is normally not possible. However, at these scales, the competition or cancellation of new type of interactions can give rise to exotic phases of matter with unusual characteristics. The goal of the project Unconventional Phases of Ultracold Quantum Matter with Competing Interactions (UltraComp) is to investigate novel phases in ultracold atoms originating from the interplay between the mean-field interactions with either kinetic energy (modified by spin-orbit coupling) or with intrinsic quantum fluctuations. The proposed state-of-the-art experiments will focus on the study of three novel phases with unconventional properties: the supersolid, the ultradilute quantum droplet and the supersolid-like liquid. The study of these novel phases will help to deepen the understanding of beyond-mean-field effects in many-body systems. At the same time, the project will provide deep insight on supersolidity, thus impacting condensed-matter physics at large.

Оригинален текст от CORDIS (на английски).

Участници

FUNDACIO INSTITUT DE CIENCIES FOTONIQUES · CastelldefelsКоординаторИспания