科学与环境
Ultracold atoms simulate hard-to-observe matter-antimatter pair production
来源: Phys.org - latest science and technology news stories · 发布于
According to quantum electrodynamics, the theory describing interactions between light and electrically charged particles, a sufficiently strong electric field can, in principle, convert some of its energy into particles and their antimatter partners. A particle's antimatter part
According to quantum electrodynamics, the theory describing interactions between light and electrically charged particles, a sufficiently strong electric field can, in principle, convert some of its energy into particles and their antimatter partners. A particle's antimatter partner has the same mass and, for electrically charged particles, the opposite electric charge.
相关报道
Figuring out where cosmic neutrinos come from is tricky—radio telescopes could help find 'ghost particles' origin
Neutrinos are funny little particles that weigh almost nothing, making them one of the universe's most elusive building blocks. They can come from objects as mundane as bananas and as exotic as supernovas—the exploding death throes of massive stars. Most neutrinos stream through
Phys.org - latest science and technology news stories ·
UK charity shop profits plummet amid shift in secondhand clothes market
British Heart Foundation describes ‘exceptionally challenging’ trading after Oxfam’s retail profit reportedly fell 23% amid rise of platforms such as Vinted Profits at some of the UK’s best-known charity shops have plummeted as they face a number of pressures, including from onli
World news | The Guardian ·
UK police should not have let US force take over airbase trial, MoD documents show
According to documents obtained by the Guardian, officials accused Cambridgeshire force of breaching US-UK deal by handing over case of woman strangled by US pilot Ministry of Defence officials have privately accused a UK police force of wrongly handing over the investigation of
World news | The Guardian ·
Calling species 'invasive'—and culling them—isn't done lightly. But it matters to Australia's threatened species
It may sound abstract, but distinctions between "native," "introduced" or "invasive" species can often be life or death. Species considered invasive in Australia—such as European rabbits and feral pigs—are often culled, while most native animals are generally left alone.
Phys.org - latest science and technology news stories ·
Four superconducting cables link two large quantum processors into one
As quantum computers grow more ambitious, many researchers believe the best way forward is to build them in multiple interconnected parts. In these modular designs, separate quantum processors are linked so they can work together as one larger machine. For this to happen, however
Phys.org - latest science and technology news stories ·