Shot noise in Weyl semimetals

We study the effect of inelastic processes on the magneto-transport of a quasi-one dimensional Weyl semi-metal, using a modified Boltzmann-Langevin approach. The magnetic field drives a crossover to a ballistic regime in which the propagation along the wire is dominated by the chiral anomaly, and the role of fluctuations inside the sample is exponentially suppressed. We show that inelastic collisions modify the parametric dependence of the current fluctuations on the magnetic field. By measuring shot noise as a function of a magnetic field, for different applied voltage, one can estimate the electron-electron inelastic length $l_{\rm ee}$.Comment: 7 pages, 1 figur

Fermi Edge Resonances in Non-equilibrium States of Fermi Gases

We formulate the problem of the Fermi Edge Singularity in non-equilibrium states of a Fermi gas as a matrix Riemann-Hilbert problem with an integrable kernel. This formulation is the most suitable for studying the singular behavior at each edge of non-equilibrium Fermi states by means of the method of steepest descent, and also reveals the integrable structure of the problem. We supplement this result by extending the familiar approach to the problem of the Fermi Edge Singularity via the bosonic representation of the electronic operators to non-equilibrium settings. It provides a compact way to extract the leading asymptotes.Comment: Accepted for publication, J. Phys.

Generalized Bayesian Record Linkage and Regression with Exact Error Propagation

Record linkage (de-duplication or entity resolution) is the process of merging noisy databases to remove duplicate entities. While record linkage removes duplicate entities from such databases, the downstream task is any inferential, predictive, or post-linkage task on the linked data. One goal of the downstream task is obtaining a larger reference data set, allowing one to perform more accurate statistical analyses. In addition, there is inherent record linkage uncertainty passed to the downstream task. Motivated by the above, we propose a generalized Bayesian record linkage method and consider multiple regression analysis as the downstream task. Records are linked via a random partition model, which allows for a wide class to be considered. In addition, we jointly model the record linkage and downstream task, which allows one to account for the record linkage uncertainty exactly. Moreover, one is able to generate a feedback propagation mechanism of the information from the proposed Bayesian record linkage model into the downstream task. This feedback effect is essential to eliminate potential biases that can jeopardize resulting downstream task. We apply our methodology to multiple linear regression, and illustrate empirically that the "feedback effect" is able to improve the performance of record linkage.Comment: 18 pages, 5 figure

Stolen Profits: Civil Shoplifting Demands and the Misuse of Neb. Rev. Stat. § 25–21,194

I. Introduction II. Background ... A. Civil Shoplifting Statutes Generally ... 1. General Authority and Amount Recoverable ... 2. Civil Demand Letters ... 3. Collection of Damages and Penalties Under Civil Shoplifting Statutes ... B. An Overview of Nebraska’s Civil Shoplifting Statute ... 1. The Origins of Nebraska’s Civil Shoplifting Statute ... 2. The Statute as Amended ... 3. Limits on Pre-Litigation Demands Under Neb. Rev. Stat. § 25–21,194 ... a. General Loss-Prevention Costs ... b. Anticipated Litigation Expenses III. Advising the Client ... A. Pay the Demand ... B. Ignore the Demand ... 1. Defending a Claim ... 2. Liability for Attorney’s Fees ... 3. Impact on Credit Rating ... C. Affirmative Legal Challenges ... 1. Federal Challenges ... a. Fair Debt Collections Practices Act … b. Racketeering Influenced and Corrupt Organization Act ... 2. Nebraska Consumer Protection Act ... a. Standing to Sue Under the NCPA ... b. Unfair or Deceptive Business Practice ... c. Trade or Commerce ... d. Affecting Public Interest ... 3. Declaratory Judgment IV. A Call to Action ... A. Legislative Repeal ... B. Legislative Amendment ... C. Education and Enforcement V. Conclusio

Stolen Profits: Civil Shoplifting Demands and the Misuse of Neb. Rev. Stat. § 25–21,194

I. Introduction II. Background ... A. Civil Shoplifting Statutes Generally ... 1. General Authority and Amount Recoverable ... 2. Civil Demand Letters ... 3. Collection of Damages and Penalties Under Civil Shoplifting Statutes ... B. An Overview of Nebraska’s Civil Shoplifting Statute ... 1. The Origins of Nebraska’s Civil Shoplifting Statute ... 2. The Statute as Amended ... 3. Limits on Pre-Litigation Demands Under Neb. Rev. Stat. § 25–21,194 ... a. General Loss-Prevention Costs ... b. Anticipated Litigation Expenses III. Advising the Client ... A. Pay the Demand ... B. Ignore the Demand ... 1. Defending a Claim ... 2. Liability for Attorney’s Fees ... 3. Impact on Credit Rating ... C. Affirmative Legal Challenges ... 1. Federal Challenges ... a. Fair Debt Collections Practices Act … b. Racketeering Influenced and Corrupt Organization Act ... 2. Nebraska Consumer Protection Act ... a. Standing to Sue Under the NCPA ... b. Unfair or Deceptive Business Practice ... c. Trade or Commerce ... d. Affecting Public Interest ... 3. Declaratory Judgment IV. A Call to Action ... A. Legislative Repeal ... B. Legislative Amendment ... C. Education and Enforcement V. Conclusio