2nd workshop Mathematical Challenges of Zero
... Efimov effect for a system of two identical fermions and a different particle Giulia Basti University of Rome “La Sapienza” In the 1970’s it was first pointed out by the physicist Vitaly Efimov that a three-body system may present an infinite number of bound states even if there are no bound states in ...
... Efimov effect for a system of two identical fermions and a different particle Giulia Basti University of Rome “La Sapienza” In the 1970’s it was first pointed out by the physicist Vitaly Efimov that a three-body system may present an infinite number of bound states even if there are no bound states in ...
Page 1 of 1 An Introduction to Tensors and Group Theory for
... definition usually has to do with transformation properties, making it difficult to get a feel of what these objects are …[Aha!] …In Part II … I introduce group theory and its physical applications … [and] [i]n Chap.5 I introduce representation theory, which is a mathematical formalization of what w ...
... definition usually has to do with transformation properties, making it difficult to get a feel of what these objects are …[Aha!] …In Part II … I introduce group theory and its physical applications … [and] [i]n Chap.5 I introduce representation theory, which is a mathematical formalization of what w ...
Document
... and postselect in (X - Y) + B, you know the particle was in B. But this is the same as preparing (B + Y) + X and postselecting (B - Y) + X, which means you also know the particle was in X. If P(B) = 1 and P(X) = 1, where was the particle really? But back up: is there any physical sense in which this ...
... and postselect in (X - Y) + B, you know the particle was in B. But this is the same as preparing (B + Y) + X and postselecting (B - Y) + X, which means you also know the particle was in X. If P(B) = 1 and P(X) = 1, where was the particle really? But back up: is there any physical sense in which this ...
EUBET 2014: Applications of effective field theories to particle
... If there is new physics in the electroweak breaking sector, the failed LHC searches suggest a mass gap, so the Higgs itself can be a Goldstone boson (as are the longitudinal vector bosons too). We can then formulate an effective theory for their interactions. With it, we have calculated the one-loop ...
... If there is new physics in the electroweak breaking sector, the failed LHC searches suggest a mass gap, so the Higgs itself can be a Goldstone boson (as are the longitudinal vector bosons too). We can then formulate an effective theory for their interactions. With it, we have calculated the one-loop ...
Renormalization
In quantum field theory, the statistical mechanics of fields, and the theory of self-similar geometric structures, renormalization is any of a collection of techniques used to treat infinities arising in calculated quantities.Renormalization specifies relationships between parameters in the theory when the parameters describing large distance scales differ from the parameters describing small distances. Physically, the pileup of contributions from an infinity of scales involved in a problem may then result in infinities. When describing space and time as a continuum, certain statistical and quantum mechanical constructions are ill defined. To define them, this continuum limit, the removal of the ""construction scaffolding"" of lattices at various scales, has to be taken carefully, as detailed below.Renormalization was first developed in quantum electrodynamics (QED) to make sense of infinite integrals in perturbation theory. Initially viewed as a suspect provisional procedure even by some of its originators, renormalization eventually was embraced as an important and self-consistent actual mechanism of scale physics in several fields of physics and mathematics. Today, the point of view has shifted: on the basis of the breakthrough renormalization group insights of Kenneth Wilson, the focus is on variation of physical quantities across contiguous scales, while distant scales are related to each other through ""effective"" descriptions. All scales are linked in a broadly systematic way, and the actual physics pertinent to each is extracted with the suitable specific computational techniques appropriate for each.