Understanding novel quantum spin liquids with high energy theory
Grant-in-Aid for JSPS Fellows
|Allocation Type||Single-year Grants |
Condensed matter physics II
|Research Institution||Okinawa Institute of Science and Technology Graduate University |
YAN HAN 沖縄科学技術大学院大学, 科学技術研究科, 特別研究員(DC2)
|Project Period (FY)
2018-04-25 – 2020-03-31
Granted (Fiscal Year 2019)
|Budget Amount *help
¥1,900,000 (Direct Cost: ¥1,900,000)
Fiscal Year 2019: ¥900,000 (Direct Cost: ¥900,000)
Fiscal Year 2018: ¥1,000,000 (Direct Cost: ¥1,000,000)
|Keywords||fracton / spin liquid / holography|
|Outline of Annual Research Achievements
My progress in the first year of his JSPS fellowship has been satisfactory.
The first of my proposed projects, to analyse experimental data for the quantum spin ice candidate Pr2Hf2O7 has been completed, and published in Nature Physics [R. Sibille et al., Nat. Phys. 14, 711 (2018)]. In 2018, I also published a first-author paper on the interpretation of "half-moon" features in inelastic neutron scattering on proximate spin liquids [H. Yan et al., Phys. Rev. B 98, 140402(R) (2018)], a result which came out of the work on Cd10Cr7O28 described in his Fellowship proposal. This paper was chosen as Editor's Suggestion in Physical Review B.
In 2019, I have published his first single-author paper, on the connection between the novel condensed-matter phenomenon of "fractons", and the holography conjectured in quantum versions of gravity [H. Yan, Phys. Rev. B 99, 155126 (2019)]. This is a very striking result, and was also chosen as Editor's Suggestion. Another paper inspired by fractons, this time exploring the possibility of higher-rank generalisations of electrodynamics, is now under review at Physical Review Letters [H. Yan et al., arXiv:1902.10934], with a second single-author paper on holography in preparation.
|Current Status of Research Progress
Current Status of Research Progress
1: Research has progressed more than it was originally planned.
In summary, my research output in the first year of his Fellowship would do credit to a mature researcher, and is quite satisfactory coming from a graduate student who works largely alone. The quality of this work is reflected not only in the publications described above, but also in the invitations whichI am now receiving to present his work at institutions like Stanford and Caltech. I consider that I have made very good use of the opportunity provided by JSPS, and expect to see him go on to accomplish even more in the second year of the Fellowship.
|Strategy for Future Research Activity
April - May: Work on discrete holographic fracton toy models and the gravitational theory from generalized rank-2 U(1) gauge the ory. Study these models in the context of AdS/CFT.
June: Attend workshop and summer school “Quantum Information and String Theory” at YITP, Kyoto University. Work on information al aspects of the fracton models.
July - August: Visit Prof. Ludovic Jaubert at University of Bordeaux, France, and my supervisor Prof. Nic Shannon (on sabbatical ) at Technical University of Munich. Work on experimental models of fracton states of matter.
September: Prepare These Defense.
October - November: Attend Workshop “Topological Quantum Matter: Concepts and Realizations” at KITP, UC Santa Barbara. December - January: Work on project: infrared structure of the gapless topological orders.
February - March: Work on project: beyond conventional topological order
Report (1 results)
Research Products (9 results)