09/2008 - 07/2014: Ph.D. in Theoretical Physics, University of Washington, WA, US
09/2004 - 07/2008: B.S. in Physics and Applied Mathematics, Peking University, China

06/2021-now: Beijing Institute of Technology, Beijing, China
11/2018-02/2021: Postdoctoral fellow, Sapienza University of Rome&INFN, Rome, Italy
09/2016-08/2018: Postdoctoral fellow, National Taiwan University, Taipei, Taiwan.
08/2014-08/2016: Postdoctoral fellow, Institute for Advanced Study, Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong.
01/2013-07/2013: KITP Graduate Fellow, Kavli Institute for Theoretical Physics (KITP) Santa Barbara, CA, US.

My research field is conventionally called high energy theoretical physics, or particle theory, one of the physics branches concerning fundamental particles and their interactions in the smallest microscopic world and the birth and evolution of the biggest universe, known as cosmology. My main interests are in studying the phenomena of possible new fundamental physics in laboratory detection experiments, cosmology, and colliders. The keywords are gravitational waves and dark sector. I am also interested in applications of quantum field theory and string theory.

Publications:

1. Particle physics through cosmology and direct detections:

[1] Sichun Sun, Xing-Yu Yang, Yun-Long Zhang, “ Pulsar Timing Residual induced by Wideband Ultralight Dark Matter with Spin 0, 1, 2”  arXiv: 2112.15593 [astro-ph.CO]

[2] N. Aggarwal, O. D. Aguiar, A. Bauswein, G. Cella, S. Clesse, A. M. Cruise, V. Domcke, D. G. Figueroa, A. Geraci, M. Goryachev, H. Grote, M. Hindmarsh, F. Muia, N. Mukund, D. Ottaway, M. Peloso, F. Quevedo, A. Ricciardone, J. Steinlechner, S. Steinlechner, S. Sun, M. E. Tobar, F. Torrenti, C. Unal, G. White, “ Challenges and Opportunities of Gravitational Wave Searches at MHz to GHz Frequencies”. arXiv: 2011.12414 [gr-qc]  Living Rev.Rel. 24 (2021) 1, 4（IF: 40.43 (2020))

[3] Rong-Gen Cai, Sichun Sun, Bing Zhang, Yun-Long Zhang, “ Dark Fluxes from Accreting Black Holes and Direct Detections.” arXiv: 2009.02315 [hep-ph] Eur.Phys.J.C 82 (2022) 3, 245

[4] Sichun Sun, Yun-Long Zhang. “Gravitational Waves and Possible Fast Radio Bursts from Axion Clumps ”  arXiv: 2003.10527 [hep-th, hep-ph,astro-ph.CO]  Phys.Rev.D 104 (2021) 10, 103009

[5] Andrea Caputo, Angelo Esposito, Emma Geoffray, Antonio D. Polosa, Sichun Sun. “ Dark Matter, Dark Photon and Superfluid He-4 from Effective Field Theory ” arXiv:1911.04511   [hep-ph, hep-th] Phys.Lett.B 802 (2020) 135258

[6]Rong-Gen Cai, Sunly Khimphun, Bum-Hoon Lee, Sichun Sun, Gansukh Tumurtushaa, Yun-Long Zhang “ Emergent Dark Universe and the Swampland Criteria ”

arXiv:1812.11105  [hep-th] Phys.Dark Univ. 26 (2019) 100387.

[7] Rong-Gen Cai, Sichun Sun, Yun-Long Zhang, “Emergent Dark matter in Late Universe on Holographic Screen.”  arXiv:1712.09326 [hep-th, hep-ph,astro-ph.CO].JHEP 1810 (2018) 009

[8]Juinn-Wei Chen, Shou-Huang Dai, Debaprasad Maity, Sichun Sun, Yun-Long Zhang,  “Towards Searching for Entangled Photons in the CMB Sky”, arXiv:1701.03437 [quant-ph]  Phys.Rev. D99 (2019) no.2, 023507

[9] Hongliang Jiang, Tao Liu, Sichun Sun, Yi Wang,  “Inflationary electroweak and GUT phase transition and CMB imprint”, arXiv:1512.07538 [astro-ph.CO] .Phys.Lett. B765 (2017) 339-343

2. Particle phenomenology in colliders:

[1] Wolfgang Kilian, Sichun Sun, Qi-Shu Yan, Xiaoran Zhao, Zhijie Zhao, “ Highly Boosted Higgs Bosons and Unitarity in Vector-Boson Fusion at Future Hadron Colliders.” arXiv: 2101.12537 [hep-ph] JHEP 05 (2021) 198

[2] Wolfgang Kilian, Sichun Sun, Qi-Shu Yan, Xiaoran Zhao, Zhijie Zhao, “Multi-Higgs boson production and unitarity in vector-boson fusion at future hadron colliders" arXiv:1808.05534  [hep-ph].Phys.Rev.D 101 (2020) 7, 076012

[3] Wolfgang Kilian, Sichun Sun, Qi-Shu Yan, Xiaoran Zhao, Zhijie Zhao, “New physics in Multi-Higgs boson final states”, arXiv:1702.03554 [hep-ph].JHEP 1706 (2017) 145

[4]Cheng-Wei Chiang, Sichun Sun and Fang Ye, “ Towards gauge unified, supersymmetric hidden strong dynamics”, arXiv:1607.05403 [hep-ph] Chin.Phys.C 45 (2021) 1, 013102

[5]Yuta Hamada, Toshifumi Noumi, Sichun Sun and Gary Shiu, “An O(750) GeV Resonance and Inflation”, arXiv: 1512.08984 [hep-ph, astro-ph.CO] Phys.Rev. D93 (2016) no.12, 123514

[6] Ben Allanach, Farinaldo S.Queiroz, Alessandro Strumia, Sichun Sun, “Z’ models for  LHCb and muon g-2 anomaly”, arXiv:1511.07447 [hep-ph] Phys.Rev. D93 (2016) no.5, 055045

[7] Sichun Sun, David B. Kaplan and Ann E. Nelson, “Little Flavor: A model of weak-scale flavor physics”, arXiv: 1303.1811. [hep-ph, hep-th] Phys.Rev. D87 (2013) 125036.

The CEPC-SPPC Study Group (For 100TeV e+e-/pp collider in China), “CEPC-SppC Preliminary Conceptual Design Report: Volume 2 - Physics & Detector ”, arXiv:1811.10545 [hep-ex]

The CEPC-SPPC Study Group (For 100TeV e+e-/pp collider in China), “CEPC-SppC Preliminary Conceptual Design Report: Physics and Detector ”, 2015, http://cepc.ihep.ac.cn/preCDR/volume.html.

3. Applications and development in quantum field theory:

[1] Sichun Sun, Yun-Long Zhang. “Notes on the Quantum Corrections of Swampland and Trans-Planckian Censorship Conjecture ”  arXiv: 1912.13509  [hep-th] Phys.Lett.B 816 (2021) 136245

[2] Jiunn-Wei Chen, Sichun Sun, Yun-Long Zhang, “Holographic Bell Inequality”, arXiv:1612.09513 [hep-th] Phys.Lett. B791 (2019) 73-79

[3] Eric Mintun, Joseph Polchinski, Sichun Sun, “The Field Theory of Intersecting D3-branes”, arXiv:1402.6327, [hep-th]. JHEP 1508 (2015) 118

[4] Andreas Karch and Sichun Sun, “Matrix flavor brane and Dual Wilson line”, arXiv: 1312.2694, Phys.Rev. D89 (2014) 066008.

[5] David B. Kaplan and Sichun Sun, “Spacetime as a topological insulator:three generations and flavor from extra dimensions”, arXiv: 1112.0302 [hep-ph, cond-mat.mes-hall,hep-th] , Phys.Rev.Lett. 108 (2012) 181807, Featured in Physics:

APS synopsis: http://physics.aps.org/synopsis-for/10.1103/PhysRevLett.108.181807.

[6] David B. Kaplan and Sichun Sun , “New field theoretic method for the Virial expansion”, arXiv:1105.0028 [cond-mat.stat-mech]  Phys.Rev.Lett.107:030601,2011, editor’s suggestion.

Complete publication list：https://inspirehep.net/authors/1283511?ui-citation-summary=true

Opportunities and positions for graduate(master/doctorate) as well as undergraduate students are available each year. Potential postdoctoral positions are posted in InspireHep Jobs in job seasons.