Testing Quantumness: From Artificial Quantum Arrays to Lattice Spin Models and Spin Liquids
Lead Research Organisation:
University of Cambridge
Department Name: Physics
Abstract
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Organisations
People |
ORCID iD |
| Claudio Castelnovo (Principal Investigator) |
Publications
Hamp J
(2015)
Emergent Coulombic criticality and Kibble-Zurek scaling in a topological magnet
in Physical Review B
Kourtis S
(2015)
Two-dimensional topological order of kinetically constrained quantum particles
in Physical Review B
Tomasello B
(2015)
Single-ion anisotropy and magnetic field response in the spin-ice materials Ho 2 Ti 2 O 7 and Dy 2 Ti 2 O 7
in Physical Review B
Kourtis S
(2016)
Free coherent spinons in quantum square ice
in Physical Review B
Castelnovo C
(2016)
Driven impurity in an ultracold one-dimensional Bose gas with intermediate interaction strength
in Physical Review A
Goldstein G
(2017)
d -wave superconductivity in boson+fermion dimer models
in Physical Review B
Shtyk A
(2017)
Electrons at the monkey saddle: A multicritical Lifshitz point
in Physical Review B
Kwasigroch M
(2017)
Semiclassical approach to quantum spin ice
in Physical Review B
Hart O
(2018)
Entanglement negativity and sudden death in the toric code at finite temperature
in Physical Review B
Xu N
(2018)
Dynamic scaling of topological ordering in classical systems
in Physical Review B
| Description | explored initial avenues of research and discussed relevant models. Established a collaborative structure with Loughborough. Explored some preliminary lattice spin systems. Investigated entanglement and negativity behavious at finite temperature in spin chains (in collaboration with project partner Prof Pollmann), and in 2D toy models (toric code). Development of mean field approaches for spin liquids; investigation of dynamics of quasiparticles in quantum spin liquids. Explored dimer models for high temperature superconductivity and found good agreement with experimental results. We proposed a mechanism for driven superconductivity. We further developed an understanding of dephasing in spin chains and we are working on transferring it to higher dimensional systems. We explored dynamics in pyrochlore oxides at the microscopic level and started exploring the collective behavour. We proposed a novel numerical approach to study quantum spin liquids, and in particular their excitations, at finite temperature. We characterised the dynamics and correlations in quantum spin liquids at finite temperature, where one type of excitation acts as disorder for the other, through their mutual anyonic statistics. |
| Exploitation Route | scientific knowledge; experimental confirmation; potential technological interest in superconductivity |
| Sectors | Education,Other |
| Description | The impact of this work is recorded against grant ref EP/M006581/1 |
| Sector | Education,Other |
| Title | Research data supporting "Color-dependent interactions in the three coloring model" |
| Description | Included in this archive is the software to generate the numerical values for the central charge, the data obtained from it for the cases studied and plotted in the paper, and the scripts to generate those plots from the data. |
| Type Of Material | Database/Collection of data |
| Year Produced | 2018 |
| Provided To Others? | Yes |