Optimal Execution Using Reinforcement Learning [PDF]
arXiv, 2023 This work is about optimal order execution, where a large order is split into several small orders to maximize the implementation shortfall. Based on the diversity of cryptocurrency exchanges, we attempt to extract cross-exchange signals by aligning data from multiple exchanges for the first time.
arxiv
What does currency order flow tell about spot exchange rates of Asian emerging markets?
Borsa Istanbul Review, 2021 This study investigates the role of currency order flow in explaining the emerging Asian markets' exchange rates relying on linear and nonlinear modeling.
Muhammad Aftab +3 more
doaj
Histogram Monte Carlo Simulation of the Geometrically Frustrated XY Antiferromagnet with Biquadratic Exchange [PDF]
Phys. Rev. B 65 (2002) 144410, 2013 Histogram Monte Carlo simulation is used to investigate effects of biquadratic exchange $J_{2}$ on phase transitions of a 3D classical XY antiferromagnet with frustration induced by the antiferromagnetic exchange $J_{1}$ and the stacked triangular lattice geometry.
arxiv +1 more source
Origin of Biquadratic Exchange Interactions in a Mott Insulator as a Driving Force of Spin Nematic Order [PDF]
J. Phys. Soc. Jpn. 87, 023702 (2018), 2018 We consider a series of Mott insulators in unit of two orbitals each hosting spin-1/2 electron, and by pairing two spin-1/2 into spin-1 triplet, derive the effective exchange interaction between the adjacent units via fourth order perturbation theory. It turns out that the biquadratic exchange interaction between spin-1, which is one of the origins of ...
arxiv +1 more source
Quantum phase transition in the Plaquette lattice with anisotropic spin exchange [PDF]
, 2003 I study the influence of anisotropic spin exchange on a quantum phase transition in the Plaquette lattice driven by the purely quantum effect of singlet formation. I study the influence of i) a Dzyaloshinskii-Moriya exchange and ii) four spin exchange on the transition point by evaluating spin--spin correlations and the spin gap with exact ...
arxiv +1 more source
Sacramental Exchange: Eschatological Economy and Consumption Ritual
Religions, 2020 Contemporary sacramental theology construes the sacraments as a symbolic gift exchange between God and humanity; God initiates in the ministry of Jesus Christ, and human beings acknowledge and respond to God’s gift.
Kimberly Belcher
doaj +1 more source
Exchange fluid model derived from first principles quantum kinetic theory for plasmas [PDF]
arXiv, 2021 Starting from first principles quantum kinetic theory for ideal plasmas with exchange effects, the quantum hydrodynamic equations are derived taking moments of the corresponding exchange-Vlasov equation. The case of an electron-ion plasma where ions are entirely classical is considered.
arxiv
Magnetic blue shift of Mott gaps enhanced by double exchange
Physical Review Research, 2021 A substantial energy gap of charge excitations induced by strong correlations is the characteristic feature of Mott insulators. We study how the Mott gap is affected by long-range antiferromagnetic order. Our key finding is that the Mott gap is increased
Mohsen Hafez-Torbati +3 more
doaj +1 more source
Exchange-enhancement of the ultrafast magnetic order dynamics in antiferromagnets [PDF]
arXiv, 2022 We theoretically demonstrate that the ultrafast magnetic order dynamics in antiferromagnets is exchange-enhanced in comparison to their ferromagnetic counterparts. We provide an equation of motion for the magnetic order dynamics validated by computer simulations using atomistic spin dynamics methods. The exchange of angular momentum between sublattices
arxiv
Role of Magnetic Exchange Energy on Charge Ordering in RSFO (R=La, Pr, and Nd) [PDF]
Phys. Rev. B 84, 224115 (2011), 2011 Inelastic neutron scattering is applied to study the role of magnetism in stabilizing the charge ordered state in \emph{R}$_{1/3}$Sr$_{2/3}$FeO$_{3}$ (\emph{R}SFO) (\emph{R} = La, Pr, and Nd). The ratio of the ferromagnetic exchange energy (J$_F$) and antiferromagnetic exchange energy (J$_{AF}$), |J$_F$ /J$_{AF}|, is a key indicator of the stability of
arxiv +1 more source