Nanjing University

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20022009

most citedQuantum reinforcement learning

418 citations

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40 papers · 1 filter

math.NT2009

Some q-congruences related to 3-adic valuations

Hao Pan, Zhi-Wei Sun

In 1992 Strauss, Shallit and Zagier proved that for any positive integer $a$ we have $k = 0 \sum 3^{a} - 1 (k 2 k) = 0 (m o d 3^{2 a})$ and furthermore $$3^{-2a}}\sum_{k=0}^{3^a-1}…

cond-mat.mtrl-sci2009★ 153 cited

Exchange bias driven by the Dzyaloshinskii-Moriya interaction and ferroelectric polarization at G-type antiferromagnetic perovskite interfaces

Shuai Dong, Kunihiko Yamauchi, Seiji Yunoki +6

Exchange bias is usually rationalized invoking spin pinning effects caused by uncompensated antiferromagnetic interfaces. However, for compensated antiferromagnets other extrinsic…

hep-ph2009★ 32 cited

$C P T$ Violating Electrodynamics and Chern-Simons Modified Gravity

Mingzhe Li, Yi-Fu Cai, Xiulian Wang +1

The electrodynamics with a Chern-Simons term $p_{μ} A_{ν} F^{μν}$ violates Lorentz and $C P T$ symmetries with a non-vanishing $p_{μ}$ . For a fixed vector $p_{μ}$ , in this paper we…

astro-ph.SR2009

Double Degenerate Stars

Luo Xin-Lian, Bai Hua, Zhao Lei

Regardless of the formation mechanism, an exotic object, Double Degenerate Star (DDS), is introduced and investigated, which is composed of baryonic matter and some unknown fermion…

math.NT2009

On the number of distinct prime factors of $nj + a^{h} k$

Hao Pan

Let $ω (n)$ denote the number of distinct prime factors of $n$ . Then for any given $K \geq 2$ , small $ε > 0$ and sufficiently large (only depending on $K$ and $ε$ ) $x$ , there exist at…

hep-th2009★ 3 cited

A no-ghost theorem for the bosonic Nappi-Witten string

Gang Chen, Yeuk-Kwan E. Cheung, Zheyong Fan +2

We prove a no-ghost theorem for a bosonic string propagating in Nappi-Witten spacetime. This is achieved in two steps. We first demonstrate unitarity for a class of NW/U(1) modules…