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相关论文: Optimizing phonon space in the phonon-coupling mod…

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The coupling between electrons and phonons is at the heart of many fundamental phenomena in physics. In nature, this coupling is generally predetermined for both, molecules and solids. Tremendous advances have been made in controlling…

介观与纳米尺度物理 · 物理学 2015-06-15 Avishai Benyamini , Assaf Hamo , Silvia Viola Kusminskiy , Felix von Oppen , Shahal Ilani

Establishing a minimal microscopic model for cuprates is a key step towards the elucidation of a high-$T_c$ mechanism. By a quantitative comparison with a recent \emph{in situ} angle-resolved photoemission spectroscopy measurement in doped…

强关联电子 · 物理学 2021-11-23 Yao Wang , Zhuoyu Chen , Tao Shi , Brian Moritz , Zhi-Xun Shen , Thomas P. Devereaux

Robust audio anti-spoofing has been increasingly challenging due to the recent advancements on deepfake techniques. While spectrograms have demonstrated their capability for anti-spoofing, complementary information presented in multi-order…

声音 · 计算机科学 2024-10-04 Penghui Wen , Kun Hu , Wenxi Yue , Sen Zhang , Wanlei Zhou , Zhiyong Wang

Inference-time computation offers a powerful axis for scaling the performance of language models. However, naively increasing computation in techniques like Best-of-N sampling can lead to performance degradation due to reward hacking.…

人工智能 · 计算机科学 2025-04-09 Audrey Huang , Adam Block , Qinghua Liu , Nan Jiang , Akshay Krishnamurthy , Dylan J. Foster

In large-scale problems, standard reinforcement learning algorithms suffer from slow learning speed. In this paper, we follow the framework of using subspaces to tackle this problem. We propose a free-energy minimization framework for…

机器学习 · 计算机科学 2020-12-15 Milad Ghorbani , Reshad Hosseini , Seyed Pooya Shariatpanahi , Majid Nili Ahmadabadi

Sorting and assigning phonon branches (e.g., longitudinal acoustic) of phonon modes is important for characterizing the phonon bands of a crystal and the determination of phonon properties such as the Gr\"uneisan parameter and group…

材料科学 · 物理学 2021-01-26 Chee Kwan Gan , Zhun-Yong Ong

Combinatorial optimization problems are one of the areas where near-term noisy quantum computers may have practical advantage against classical computers. Recently a novel feedback-based quantum optimization algorithm has been proposed by…

量子物理 · 物理学 2025-01-13 Don Arai , Ken N. Okada , Yuichiro Nakano , Kosuke Mitarai , Keisuke Fujii

Phonon-assisted tunneling plays a crucial role for electronic device performance and even more so with future size down-scaling. We show how one can include this effect in large-scale first-principles calculations using a single "special…

介观与纳米尺度物理 · 物理学 2017-10-25 Tue Gunst , Troels Markussen , Mattias L. N. Palsgaard , Kurt Stokbro , Mads Brandbyge

To mitigate reward hacking from response verbosity, modern preference optimization methods are increasingly adopting length normalization (e.g., SimPO, ORPO, LN-DPO). While effective against this bias, we demonstrate that length…

机器学习 · 计算机科学 2025-11-06 Taneesh Gupta , Rahul Madhavan , Xuchao Zhang , Chetan Bansal , Saravan Rajmohan

Magnon blockade is a physical mechanism for the preparation of a single-magnon source, which has important applications in quantum information processing. Here we propose a scheme for generating an optimal magnon blockade in the spin-magnon…

量子物理 · 物理学 2025-05-28 Sheng Zhao , Ya-Long Ren , Xin-Lei Hei , Xue-Feng Pan , Peng-Bo Li

The random phase approximation (RPA) builds in correlations left out by mean-field theory. In full 0-hbar-omega shell-model spaces we calculate the Hartree-Fock + RPA binding energy, and compare it to exact diagonalization. We find that in…

核理论 · 物理学 2009-11-07 Ionel Stetcu , Calvin W. Johnson

Neuromorphic computing, inspired by nervous systems, revolutionizes information processing with its focus on efficiency and low power consumption. Using sparse coding, this paradigm enhances processing efficiency, which is crucial for edge…

声音 · 计算机科学 2025-09-01 Soufiyan Bahadi , Eric Plourde , Jean Rouat

We introduce a noise-aware extension to the parametric maximum-likelihood framework for component separation by modeling correlated $1/f^\alpha$ noise as a harmonic-space power law. This approach addresses a key limitation of existing…

宇宙学与河外天体物理 · 物理学 2025-11-07 Goureesankar Sathyanathan , Josquin Errard , Soumen Basak

We observe strong softening of optical phonon modes in superconducting (Tc = 4.2 K) boron doped diamond near the Brillouin zone center using inelastic x-ray scattering from a CVD-grown highly oriented sample. The magnitude of the softening,…

It is shown that fully-parallel encoding and decoding schemes with asymptotic block error probability that scales as $O\left(f\left(n\right)\right)$ have Thompson energy that scales as $\Omega\left(\sqrt{\ln f\left(n\right)}n\right)$. As…

信息论 · 计算机科学 2016-02-15 Christopher G. Blake , Frank R. Kschischang

The growth in the number of low-cost narrow band radios such as Bluetooth low energy (BLE) enabled applications such as asset tracking, human behavior monitoring, and keyless entry. The accurate range estimation is a must in such…

信息论 · 计算机科学 2023-03-28 Alireza Sheikh , Jac Romme , Jochem Govers , Amirashkan Farsaei , Christian Bachmann

The current investigation focuses on detailed analysis of the anchor based optimization approach (ABOA), its comparison with alternative global fitting protocols and on the global analysis of the truncation of basis effects in the…

核理论 · 物理学 2024-06-05 A. Taninah , B. Osei , A. V. Afanasjev , U. Perera , S. Teeti

We discuss how searching for finite amplitude disturbances of a given energy which maximise their subsequent energy growth after a certain later time $T$ can be used to probe phase space around a reference state and ultimately to find other…

流体动力学 · 物理学 2017-08-23 Daniel Olvera , Rich R. Kerswell

The relativistic random-phase approximation (RRPA) plus phonon-coupling (PC) model is applied in the analysis of E1 strength distributions in $^{208}$Pb and $^{132}$Sn, for which data on pygmy dipole resonances (PDR) have recently been…

核理论 · 物理学 2008-11-26 E. Litvinova , P. Ring , D. Vretenar

In TDD reciprocity-based massive MIMO it is essential to be able to compute the downlink precoding matrix over all OFDM resource blocks within a small fraction of the uplink-downlink slot duration. Early implementation of massive MIMO are…

信息论 · 计算机科学 2017-11-15 Andreas Benzin , Giuseppe Caire , Yonatan Shadmi , Antonia Tulino
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