We introduce μ-Abstract Elementary Classes (μ-AECs) as a broad framework for model theory that includes complete boolean algebras and metric spaces, and begin to develop their classification theory. Moreover, we note that μ-AECs correspond precisely to accessible categories in which all morphisms are monomorphisms, and begin the process of reconciling these divergent perspectives: for example, ...

Some Cosmological models propose that elementary particles were created during the cooldown of the universe after the “Big Bang”, through a series of symmetry breaking phase transitions[1]. According to these models, these elementary particles are “topological defects” of the cold, ordered phase in which the universe is found today. The equations describing these phase transition of the univers...

There is space for new ideas of the essence and the entity of time. The article refers to our time concept as a special wave type and presents results of our investigations on this subject. Thus, time defined as waves and an energy carrier could give explanation to multiple unclear phenomena. It could explicate gravity, organization in the planetary systems and light speed limit. A hypothesis t...

We investigate the muon neutrino event rate in km neutrino telescopes due to a number of galactic supernova remnants expected on the basis of these objects’ known γ-ray signals. We evaluate the potential of these neutrino signals to exhibit evidence of the sub-dominant neutrino oscillations expected in various neutrino mixing schemes including pseudo-Dirac scenarios and the Exact Parity Model. ...

In this article I summarize some aspects of the current status of the field of high energy physics and discuss how the next generation of high energy colliders will aid in furthering our basic understanding of elementary particles and interactions among them, by shedding light on the mechanism for the spontaneous breakdown of the Electroweak Symmetry.

During the past one hundred years three related elementary particles– the electron, the muon, and the tau–were discovered by very different scientific techniques. The author, who received the Wolf Prize and the Nobel Prize for the discovery of the tau, uses this history to discuss certainty and uncertainty in the practice of science. While the emphasis is on the practice of scientific research,...

In this talk I briefly explain the concept of the structure function of a photon (the best known boson). Then I review some of the current experimental evidence which confirms the existence of ‘strong’ interactions of photon suggested by this idea. I end by pointing out how the photon ‘structure’ has important implications for the interactions of high energy photons and hence for the design of ...

Particle physics aims to understand the universe around us. The Standard Model (SM) of particle physics describes the basic structure of matter and the forces through which matter interacts, to the extent we have been able to probe thus far. However, it leaves some big questions unanswered. Some are within the SM itself, such as why there are so many fundamental particles and why they have diff...

We derive compact analytical formulae of the Bonneau-Martin type for the reaction e + e − → ¯ f f γ with cuts on minimal energy and acollinearity of the fermions, where the photons may be emitted both from the initial or final states. Soft-photon exponentiation is also taken into account. One of the cleanest scattering processes at elementary particle accelerators is fermion-pair production in ...

We derive compact analytical formulae of the Bonneau-Martin type for the reaction e + e − → ¯ f f γ with cuts on minimal energy and acollinearity of the fermions, where the photons may be emitted both from the initial or final states. Soft-photon exponentiation is also taken into account. One of the cleanest scattering processes at elementary particle accelerators is fermion-pair production in ...