New states of matter in multi-component quantum many-body systems

Project funded by Swedish Research Council (Project grant), grant 2013-07837_VR. Participating organisations named by the source: KTH, Royal Institute of Technology. Funded amount: SEK 18,000,000, as stated by the source. Runs 2013-01-01 to 2018-12-31. Keywords: Naturvetenskap, Natural Sciences, Fysik, Physical Sciences, Den kondenserade materiens fysik, Condensed Matter Physics. Source: OpenAIRE Graph, from the funder's project data (collected by OpenAIRE on 2025-12-04); national funding data, not CORDIS. Abstract given by the source: Currently, the known "super" states of matter are superfluid liquids, superfluid vapours, superconductors, and supersolids. A question of fundamental importance is: Can there be any other aggregate super states of matter? We will investigate multicomponent quantum many-body systems with long-range inter-component interactions, in which new states of matter may form. Such interactions can lead to violation of physical laws which are universal in ordinary superconductors and superfluids. This can result in new aggregate states of matter such as metallic or superconducting superfluids, and in the violation of quintessential properties of super states such as the Onsager-Feynman quantization or the Anderson-Higgs effect. Another of our goals is to study superconducting behaviour which falls outside the type-1/type-2 dichotomy. For nearly a century, all known superconductors fell into either of these two classes. However, recently an entirely new "type-1.5" class of superconductor was predicted. Its experimental observation has also been reported. Type-1.5 superconductors simultaneously possess certain type-1 and type-2 properties that have previously been deemed incompatible. This gives rise to an abundance of entirely new physics. We will develop theories of this novel superconducting state. Also, we will investigate other topics of the highest current interest: deconfined quantum criticality and strongly correlated and frustrated states of quantum many-body systems.

Original source.

Source: OpenAIRE Graph: projects of national funders, OpenAIRE, from the project data of Swedish Research Council. Retrieved 2026-10-22. Licence: Creative Commons Attribution 4.0 (OpenAIRE Graph). Selected metadata, adapted presentation; the publisher's record is authoritative. No endorsement by the source is implied. Licence: Creative Commons Attribution 4.0 (CC BY 4.0).

AI-assisted summary: The project, funded by the Swedish Research Council with SEK 18,000,000, investigates multi-component quantum many-body systems to explore potential new states of matter. It runs from January 1, 2013, to December 31, 2018, involving KTH, Royal Institute of Technology. Suggested technology pillar: enabling. Generated by AI from the public source text; it may contain errors and the original source is authoritative.