| 研究課題/領域番号 |
20J20974
|
|---|
| 研究種目 |
特別研究員奨励費
|
| 配分区分 | 補助金 |
|---|
| 応募区分 | 国内 |
|---|
| 審査区分 |
小区分15010:素粒子、原子核、宇宙線および宇宙物理に関連する理論
|
|---|
| 研究機関 | 慶應義塾大学 |
|---|
研究代表者 |
QIU Zebin 慶應義塾大学, 自然科学研究教育センター(日吉), 特別研究員(PD)
|
|---|
| 研究期間 (年度) |
2020-04-24 – 2023-03-31
|
| 研究課題ステータス |
完了 (2022年度)
|
| 配分額 *注記 |
2,500千円 (直接経費: 2,500千円)
2022年度: 800千円 (直接経費: 800千円)
2021年度: 800千円 (直接経費: 800千円)
2020年度: 900千円 (直接経費: 900千円)
|
|---|
| キーワード | QCD / Effective Theory / Topology / Chiral Symmetry / Phase Diagram / Skyrme Model / Chiral Soliton Lattice / Topological Soliton / Casimir Effect / Chiral Anomaly / Axion Electrodynamics |
|---|
| 研究開始時の研究の概要 |
I study novel physical phenomena induced by quantum anomaly. One is the anomalous Casimir effect that refers to the force resulting from quantum fluctuations among the vacuum. In the presence of chiral anomaly, the Casimir force exhibits extraordinary properties such as altering its nature from attraction to repulsion. On the other hand, the curvature and torsion of spacetime also have non-trivial interplay with the chiral anomaly and they generate new type of anomalous currents in chiral systems. I'm devoted to quantifying these effects and revealing their physical significance.
|
| 研究実績の概要 |
I accomplished two studies on the topological phases of low-energy dense QCD.
The first was a magnetized Skyrmion system describing the hadron properties altered by an external magnetic field. Our results hint at the enhancement of the baryonic confinement induced by the magnetic field, in an original approach.
The second was a further investigation of a competing mesonic phase (against baryonic phase) under a strong magnetic field, namely the chiral soliton lattice. We innovatively encompass the eta meson into the chiral perturbation theory which was usually in terms of only pions. We found the ground state given such a U(2) field is a mixed soliton lattice or quasicrystal with nontrivial windings of both neutral pion and eta, which could be the first incarnation of a quasicrystal in QCD.
|
| 現在までの達成度 (段落) |
令和4年度が最終年度であるため、記入しない。
|
| 今後の研究の推進方策 |
令和4年度が最終年度であるため、記入しない。
|
