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arXiv research

A locally-built, LLM-digested index of recent arXiv papers in quant finance, geometry/topology, and statistical ML — keyword search served straight from SQLite on this machine.

168,742 papers · 148 categories

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0111 · Jan 199919922001200920172026
17 results for Schrödinger

Paper introduces a new generative learning model using Schrödinger bridge diffusion in latent space.

problem Learning distributions from divergent data distributions.
method Pre-training with large-scale models, Schrödinger bridge diffusion model in latent space.
result Effective control of second-order Wasserstein distance between generated and target distributions.

Unified framework for robust, stable, and efficient density ratio estimation.

problem Density-chasm and support-chasm problems in density ratio estimation.
method Dequantified diffusion-Schrödinger bridge (D3RE) framework with DDBI and DSBI.
result Offers uniform approximation and bounded time scores in theory and empirical performance.

We give a new lower bound for the first gap λ2λ1λ_2 - λ_1 of the Dirichlet eigenvalues of the Schr{ö}dinger operator on a bounded convex domain ΩΩ in Rn^n or Sn^n and greatly sharpens the previous estimates. The new bound is explicit and computable.

2004-04-22abs ↗pdf ↗

Suppose that G=(V,E)G=(V, E) is a finite graph with the vertex set VV and the edge set EE. Let ΔΔ be the usual graph Laplacian. Consider the following nonlinear Schro¨\ddot{o}dinger type equation of the form {Δuαu=f(x,u),uW1,2(V), \left \{ \begin{array}{lcr} -Δu-αu=f(x,u),\\ u\in W^{1,2}(V),\\ \end{array} \right. on graph GG, where $f(x…

2019-03-13abs ↗pdf ↗

Study shows observability for Schrödinger equations on product manifolds with specific conditions.

problem Observability of Schrödinger equations on product manifolds with product metrics.
method Proof of observability in finite time on open subsets satisfying Vertical Geometric Control Condition, under gap condition on spectrum of F(g).
result Observability on ω for the Schrödinger equation is strictly weaker than Geometric Control Condition on product of spheres.

The goal of this article is twofold: in a first part, we prove Gaussian estimates for the heat kernel of Schr{ö}dinger operators delta + V whose potential V is "small at infinity" in an integral sense. In a second part, we prove sharp boundedness result for the associated Riesz transform with potential d(delta+V) --1/2…

2015-03-02abs ↗pdf ↗

CMCD sampler connects transport and variational inference for efficient sampling.

problem Efficient sampling and generative modeling in Bayesian computation.
method Developed a principled framework using divergences on path space, CMCD sampler with adaptive dynamics.
result CMCD sampler outperforms competing approaches across various experiments.

In this paper, the Dirac, twistor and Killing equations on Weyl manifolds with CSpin structures are investigated. A conformal Schr"odinger-Lichnerowicz formula is presented and used to show integrability conditions for these equations. By introducing the Killing equation for spinors of arbitrary weight, the result of A…

1999-01-27abs ↗pdf ↗

The paper investigates geometrical aspects of static spacetime with almost gradient Ricci solitons.

problem Geometrical properties of static spacetime with almost gradient Ricci solitons.
method Analyzing conditions and properties of static spacetime with almost gradient Ricci solitons.
result Conditions and properties of static spacetime with almost gradient Ricci solitons are determined.