Roh-Suan Tung

童若軒

email: rstung _at_ ntu.edu.sg       rstung_at_cycu.edu.tw       roh.suan.tung_at_gmail.com

• • Advisory panel, Classical and Quantum Gravity, Institute of Physics, UK

  • Lifetime member, International Society on General Relativity and Gravitation

  • Advisory board, The Leeds Centre for New Chinese Writing

  • Editor-in-Chief, Balestier Press

  • Adjunct professor, Nanyang Technological University Singapore and Chung Yuan Christian University (Department of Physics)

Academic Tree

Selected research papers:

• • Spacetime torsion fixes the mass and spin of gravitationally produced dark matter, arXiv:2606.23418 (2026).

  • Dark matter from the quadratic spinor Lagrangian I: Geometric mass for a gravitationally produced spin-1/2 fermion, arXiv:2606.23447 (2026).

  • Dark matter from the quadratic spinor Lagrangian II: A spin-3/2 no-go and the uniqueness of the spin-1/2 candidate, arXiv:2606.23273 (2026).

  • Gravitational Energy for General Relativity and Poincare Gauge Theories: a Covariant Hamiltonian Approach, International Journal of Modern Physics D 24 (2015) 1530026; in "One Hundred Years of General Relativity", W.T. Ni Eds., (World Scientific 2017) pp. 187-261 (with C. M. Chen and J. M. Nester).

  • Scalar Field Cosmology I: Asymptotic Freedom and the Initial-Value Problem, Classical and Quantum Gravity 29 (2012) 155014 (with Kerson Huang, Hwee-Boon Low).

  • Scalar Field Cosmology II: Superfluidity and Quantum Turbulence, International Journal of Modern Physics A 27 (2012) 1250154 (with Kerson Huang, Hwee-Boon Low).

  • Cosmology of an asymptotically free scalar field with spontaneous symmetry breaking, arXiv:1011.4012 (with Kerson Huang, Hwee-Boon Low).

  • Brown-York mass and the Thorne Hoop Conjecture, Physical Review Letters 104 (2010) 041101 (with Niall O'Murchadha, Naqing Xie, Edward Malec).

  • Energy and angular momentum in strong gravitating systems, International Journal of Modern Physics A 24 (2009) 3538.

  • Quasi-local energy flux of spacetime perturbation, Physical Review D 78 (2008) 104010 (with Hoi-Lai Yu).

  • Stationary untrapped boundary condition in general relativity, Classical and Quantum Gravity 25 (2008) 085005.

  • Covariant Hamiltonian boundary conditions in General Relativity for spatially bounded spacetime regions, Journal of Mathematical Physics 43 (2002) 5531 (with S. Anco).

  • Spinor 1-forms as gravitational potentials, Classical and Quantum Gravity 12 (1995) L51 (with Ted Jacobson).

  • A Quadratic Spinor Lagrangian for General Relativity, General Relativity and Gravitation 27 (1995) 115. (Forth Prize Essay Award, 1994, Gravity Research Foundation, with James M. Nester).

Book publications:

• • 星空的思索， 台北大塊文化出版， 台灣2006年讀書人年度最佳書獎（非文學類)。