香港都有哪些顶尖的 Quant Shop？ - 知乎
Nov 3, 2017 · 来源于这个问题：Quant Shop 主要都有哪些类型？ 截至7月中旬，百亿私募数量为109家，其中百亿量化私募数量占比为25%。 第三方平台统计数据显示，有83家百亿私募6月收益为正。迎 …
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Geometric Frustration and Dimensional Reduction at a Quantum Critical Point
We show that the spatial dimensionality of the quantum critical point associated with Bose--Einstein condensation at T=0 is reduced when the underlying lattice comprises a set of layers coupled by a frustrating interaction. Our theoretical predicti...
Strong Charge Fluctuations in the Single-Electron Box: A Quantum Monte Carlo Ana…
We study strong electron tunneling in the single-electron box, a small metallic island coupled to an electrode by a tunnel junction, by means of quantum Monte Carlo simulations. We obtain results, at arbitrary tunneling strength, for the free energ...
Quantum Neural Networks for Propensity Score Estimation and Survival Analysis in…
This study investigates the application of quantum neural networks (QNNs) for propensity score estimation to address selection bias in comparing survival outcomes between laparoscopic and open surgical techniques in a cohort of 1177 colorectal carcin...
Running and running of the running of the scalar spectral index in warm inflatio…
Next generation of cosmological observations are expected to improve the measurements of several quantities connected to the primordial inflation in the early Universe. These quantities include for example improved measurements for the spectral index...
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Color-magnetic flux tubes in quark matter cores of neutron stars
We argue that if color-superconducting quark matter exists in the core of a neutron star, it may contain a high density of flux tubes, carrying flux that is mostly color-magnetic, with a small admixture of ordinary magnetic flux. We focus on the two-...
Quantum Wire Network with Magnetic Flux
The charge transport and the noise of a quantum wire network, made of three semi-infinite external leads attached to a ring crossed by a magnetic flux, are investigated. The system is driven away from equilibrium by connecting the external leads to h...
Classical Gravitational Bremsstrahlung from a Worldline Quantum Field Theory
Using the recently established formalism of a worldline quantum field theory (WQFT) description of the classical scattering of two spinless black holes, we compute the far-field time-domain waveform of the gravitational waves produced in the encounte...
AI tool generates high-quality images faster than state-of-the-art ...
Mar 21, 2025 · A hybrid AI approach known as hybrid autoregressive transformer can generate realistic images with the same or better quality than state-of-the-art diffusion models, but that runs about nine …
Analysis of coupled-channel potentials with quark and hadron degrees of freedom
The quark-antiquark potentials are known to be confining in the absence of the $\bar{q}q$ pair creation. On the other hand, the inter-hadron potentials vanish at large distance, because the interaction range is limited by the inverse pion mass. When...
Quantum Auctions using Adiabatic Evolution: The Corrupt Auctioneer and Circuit I…
We examine a proposed auction using quantum states to represent bids and distributed adiabatic search to find the winner. When the auctioneer follows the protocol, the final measurement giving the outcome of the auction also destroys the bid states...
Formation of a quasiperiodic copper thin film
We have synthesised a thin film of copper with a quasi-periodic structure by the adsorption of copper atoms on the five-fold surface of the icosahedral quasicrystal Al-Pd-Mn at room temperature. The quasi-periodicity of the thin film is manifested...
AI tool generates high-quality images faster than state-of-the-art ...
Mar 21, 2025 · A hybrid AI approach known as hybrid autoregressive transformer can generate realistic images with the same or better quality than state-of-the-art diffusion models, but that runs about nine …
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Approach to Microcanonical Equilibrium for Nonisolated Systems
The approach to equilibrium for systems interacting with their environment by being regularly exposed to low energy, low intensity pulses of some type of quanta is studied. Assuming a randomness condition on the interaction of these quanta with the...
A dynamical Einstein-Born-Infeld-dilaton model and holographic quarkonium meltin…
We generalize the potential reconstruction method to set up a dynamical Einstein-Born-Infeld-dilaton model, which we then use to study holographic quarkonium melting in an external magnetic field. The non-linear nature of the model allows to couple t...
Bayesian inference for near-field interferometric tests of collapse models
We explore the information which proposed matterwave interferometry experiments with large test masses can provide about parameterizable extensions to quantum mechanics, such as have been proposed to explain the apparent quantum to classical transiti...
Learning To Score Olympic Events
Estimating action quality, the process of assigning a "score" to the execution of an action, is crucial in areas such as sports and health care. Unlike action recognition, which has millions of examples to learn from, the action quality datasets that...