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Temu新品爆品 | 目前已有89%的亚马逊卖家实现盈利
标题:1pc Stainless Steel Food Tongs Fried Fish Tongs Steak Tongs Pancake Tongs Barbecue Tongs Multi-Function Tongs Kitchen Utensils Accessories。
Shopee新品爆品 | Shopee母公司冬海第三季度财报：营收32亿美元
“Shopee母公司冬海集团发布第三季度财报：营收32亿美元”Shopee母公司冬海集团（Sea Limited）于新加坡时间11月15日公布了截至2022年9月30日的第三季度财务业绩。报告期内，冬海集团总营收为32亿美元，同比增长17.4%。总毛利12亿美元，同比增长21.
《自然》（20230126出版）一周论文导读
Abstract:Decay of a particle into more particles is a ubiquitous phenomenon to interacting quantum systems， taking place in colliders， nuclear reactors or solids. In a nonlinear medium， even a single photon would decay by down-converting into lower-frequency photons with the same total energy， at a rate given by Fermi’s golden rule. However， the energy-conservation condition cannot be matched precisely if the medium is finite and only supports quantized modes. Here we implement such an experiment using a superconducting multimode cavity， the nonlinearity of which was tailored to strongly violate the photon-number conservation. The resulting interaction attempts to convert a single photon excitation into a shower of low-energy photons but fails owing to the many-body localization mechanism， which manifests as a striking spectral fine structure of multiparticle resonances at the standing-wave-mode frequencies of the cavity. Each resonance was identified as a many-body state of radiation composed of photons from a broad frequency range and not obeying Fermi’s golden rule theory. Our result introduces a new platform to explore the fundamentals of many-body localization without having to control many atoms or qubits.