comingfrom the “particle”-physics tradition, who hold that QFT is fundamentally a formalism for describing processesinvolving particles, such as scattering or decays. A typical example of this position is Weinberg [5], who cannotcertainly be suspected of ignoring general relativity.These dif f i...
Natalie Wolchover for Quanta Magazineasked several physicists what a particle is. She came away with several points of view. For example, the particle as a “irreducible representation of a group”: It’s the standard deep answer of people in the know: Particles are “representations” of “sy...
However, this does not yet give us an idea how a particle can ever be a wave. When we imagine a particle, we see a little ball, located at a particular position at a specific time and propagating at a particular velocity. If particles are to be represented by waves, then we must be...
Theoretical developments related to the gravitational interaction have questioned the notion of particle in quantum field theory (QFT). For instance, uniquely-defined particle states do not exist in general, in QFT on a curved spacetime. More in general,
What is the purpose of a particle accelerator? What particles can be accelerated by a linear accelerator? What is a boson particle? What do scientists study using a particle accelerator? What are the two types of particle accelerators? What is a neutrino particle? How big is a particle accele...
Particle physics is a branch of physics that studies the particles that make up matter. So this branch of physics tries to understand matter at its most fundamental level and how matter behaves at that level. It also tries to understand how matter interacts and turns from one form to another...
放入,与其修饰的microplastic particles(塑料微粒)存在逻辑上的被动关系,此处应用其过去分词形式introduced,所以此处答案是introduced。62.【答案】analysis【解析】本句The___of this pollution is more important and urgent than ever.句意为对这种污染的分析比以往更加重要和紧迫。此处前面有定冠词The,后面有of,此处应...
What is a way to unite civilization and create a new and better future for humanity? I will answer these questions now What is a personal unifying principle? A unifying principle organizes something that was previously unorganized. If your psyche is disorganized, a strong new interest can organiz...
and creativity among students. One exciting way to engage children in STEM projects is by making a DIY vacuum cleaner. This hands-on activity not only teaches them about physics and engineering but also encourages them to use th...
particles of sand in water. Colloids - heterogeneous mixtures in which one is substance microscopically dispersed evenly throughout another substance (for comparison, the size of the particles of 'solute' are greater than in the case of a solution, but much smaller than in the case of a ...