34 citations · 104 across the 12 of their papers we have counts for
12 papers
Exact Multi-Instanton Solutions to Selfdual Yang-Mills Equation on Curved Spaces
Jun Nian, Yachao Qian
We find exact multi-instanton solutions to the selfdual Yang-Mills equation on a large class of curved spaces with isometry, generalizing the results previously found on $\…
A Topological Way of Finding Solutions to Yang-Mills Equation
Jun Nian, Yachao Qian
We propose a systematic way of finding solutions to classical Yang-Mills equation with nontrivial topology. This approach is based on one of Wightman axioms for quantum field theor…
Stability results, almost global generalized Beltrami fields and applications to vortex structures in the Euler equations
Alberto Enciso, David Poyato, Juan Soler
Strong Beltrami fields have long played a key role in fluid mechanics and magnetohydrodynamics. In particular, they are the kind of stationary solutions of the Euler equations wher…
Spin Physics through QCD Instantons
Yachao Qian, Ismail Zahed
We review some aspects of spin physics where QCD instantons play an important role. In particular, their large contributions in semi-inclusive deep-inelastic scattering and polariz…
Streched String with Self-Interaction at the Hagedorn Point: Spatial Sizes and Black Hole
Yachao Qian, Ismail Zahed
We analyze the length, mass and spatial distribution of a discretized transverse string in dimensions with fixed end-points near its Hagedorn temperature. We suggest that…
Stretched String with Self-Interaction at High Resolution: Spatial Sizes and Saturation
Yachao Qian, Ismail Zahed
We model the (holographic) QCD Pomeron as a long and stretched (fixed impact parameter) transverse quantum string in flat dimensions. After discretizing the string in $…
A Stringy (Holographic) Pomeron with Extrinsic Curvature
Yachao Qian, Ismail Zahed
We model the soft pomeron in QCD using a scalar Polyakov string with extrinsic curvature in the bottom-up approach of holographic QCD. The overall dipole-dipole scattering amplitud…
Double Spin Asymmetries through QCD Instantons
Yachao Qian, Ismail Zahed
We revisit the large instanton contribution to the gluon Pauli form factor of the constituent quark noted by Kochelev. We check that it contributes sizably to the single spin asymm…
Stringy Pomeron: Entropy and Shear Viscosity
Yachao Qian, Ismail Zahed
We model the soft pomeron contribution to dipole-dipole scattering as a closed string exchange in AdS5 with a wall. The exchange of closed and long strings is characterized by an a…
P-Odd Pion Azimuthal Charge Correlations in Heavy Ion Collisions
Yachao Qian, Ismail Zahed
We argue that the large instanton induced Pauli form factor in polarized proton-proton scattering may cause, through topological fluctuations, substantial charge-dependent azimutha…
Single Spin Asymmetry through QCD Instantons
Yachao Qian, Ismail Zahed
We revisit the effects of QCD instantons in semi-inclusive deep inelastic scattering (SIDIS). We show that large single spin asymmetry (SSA) effects can be induced in longitudinall…
Quantum fluctuations of one-dimensional free fermions and Fisher-Hartwig formula for Toeplitz determinants
Alexander G. Abanov, Dmitri A. Ivanov, Yachao Qian
We revisit the problem of finding the probability distribution of a fermionic number of one-dimensional spinless free fermions on a segment of a given length. The generating functi…