71 citations · 432 across the 20 of their papers we have counts for
21 papers
Constraints on holographic QCD phase transitions from PTA observations
Song He, Li Li, Sai Wang +1
The underlying physics of QCD phase transition in the early Universe remains largely unknown due to its strong-coupling nature during the quark-gluon plasma/hadron gas transition,…
Holographic study of higher-order baryon number susceptibilities at finite temperature and density
Zhibin Li, Jingmin Liang, Song He +1
The cumulants of baryon number fluctuations serve as a good probe for experimentally exploring the QCD phase diagram at finite density, giving rise to characteristic fluctuation pa…
The ABJM Amplituhedron
Song He, Yu-tin Huang, Chia-Kai Kuo
In this paper, we take a major step towards the construction and applications of an all-loop, all-multiplicity amplituhedron for three-dimensional planar Chern-Simo…
Pseudo entropy of primary operators in /-deformed CFTs
Song He, Jie Yang, Yu-Xuan Zhang +1
In this work, we investigate the time evolution of the pseudo-(Rényi) entropy after local primary operator quenches in 2D CFTs with -deformation. Using perturbatio…
Jumpstarting (elliptic) symbol integrations for loop integrals
Song He, Yichao Tang
We derive an algorithm for computing the total differentials of multi-loop integrals expressed as one-fold integrals of multiple polylogarithms, which can involve square roots of p…
Holographic torus correlators of stress tensor in
Song He, Yi Li, Yun-Ze Li +1
In the context of , we investigate holographic correlators of the stress tensor of a conformal field theory (CFT) on a torus in this work. To calculate the correla…
Emergent unitarity, all-loop cuts and integrations from the ABJM amplituhedron
Song He, Chia-Kai Kuo, Zhenjie Li +1
We elaborate on aspects of a new positive geometry proposed recently, which was conjectured to be the four-point amplituhedron for ABJM theory. We study generalized unitarity cuts…
Cutting the traintracks: Cauchy, Schubert and Calabi-Yau
Qu Cao, Song He, Yichao Tang
In this note we revisit the maximal-codimension residues, or leading singularities, of four-dimensional -loop traintrack integrals with massive legs, both in Feynman parameter s…
Phase diagram of holographic thermal dense QCD matter with rotation
Yan-Qing Zhao, Song He, Defu Hou +2
We study the rotation effects of the hot and dense QCD matter in a non-perturbative regime by the gauge/gravity duality. We use the gravitational model that is designated to match…
The two-loop eight-point amplitude in ABJM theory
Song He, Yu-tin Huang, Chia-Kai Kuo +1
In this paper, we present the two-loop correction to scattering amplitudes in three-dimensional Chern-Simons matter theory. We use eight-point case as our main exam…
Perfecting one-loop BCJ numerators in SYM and supergravity
Alex Edison, Song He, Henrik Johansson +3
We take a major step towards computing -dimensional one-loop amplitudes in general gauge theories, compatible with the principles of unitarity and the color-kinematics duality.…
Gravitational Waves and Primordial Black Hole Productions from Gluodynamics by Holography
Song He, Li Li, Zhibin Li +1
Understanding the nature of quantum chromodynamics (QCD) matter is important but challenging due to the presence of non-perturbative dynamics under extreme conditions. We construct…
The symbology of Feynman integrals from twistor geometries
Song He, Jiahao Liu, Yichao Tang +1
We study the symbology of planar Feynman integrals in dimensional regularization by considering geometric configurations in momentum twistor space corresponding to their leading si…
A study of Feynman integrals with uniform transcendental weights and the symbology from dual conformal symmetry
Song He, Zhenjie Li, Rourou Ma +3
Multi-loop Feynman integrals are key objects for the high-order correction computations in high energy phenomenology. These integrals with multiple scales, may have complicated sym…
All-Loop Four-Point Aharony-Bergman-Jafferis-Maldacena Amplitudes from Dimensional Reduction of the Amplituhedron
Song He, Chia-Kai Kuo, Zhenjie Li +1
We define a new geometry obtained from the all-loop amplituhedron in SYM by reducing its four-dimensional external and loop momenta to three dimensions. Focusing on th…
Probing QCD critical point and induced gravitational wave by black hole physics
Rong-Gen Cai, Song He, Li Li +1
Locating the critical endpoint of QCD and the region of a first-order phase transition at finite baryon chemical potential is an active research area for QCD matter. We provide a g…
Kinematics, cluster algebras and Feynman integrals
Song He, Zhenjie Li, Qinglin Yang
We identify cluster algebras for planar kinematics of conformal Feynman integrals in four dimensions, as sub-algebras of that for top-dimensional corresponding to -poin…
Truncated cluster algebras and Feynman integrals with algebraic letters
Song He, Zhenjie Li, Qinglin Yang
We propose that the symbol alphabet for classes of planar, dual-conformal-invariant Feynman integrals can be obtained as truncated cluster algebras purely from their kinematics, wh…
Bootstrapping octagons in reduced kinematics from cluster algebras
Song He, Zhenjie Li, Yichao Tang +1
Multi-loop scattering amplitudes/null polygonal Wilson loops in super-Yang-Mills are known to simplify significantly in reduced kinematics, where external legs/edg…
-flow effects on torus partition functions
Song He, Yuan Sun, Yu-Xuan Zhang
In this paper, we investigate the partition functions of conformal field theories (CFTs) with the deformation on a torus in terms of the perturbative QFT approach. In La…
Causal Diamonds, Cluster Polytopes and Scattering Amplitudes
Nima Arkani-Hamed, Song He, Giulio Salvatori +1
The "amplituhedron" for tree-level scattering amplitudes in the bi-adjoint theory is given by the ABHY associahedron in kinematic space, which has been generalized to give a…