The modal nature of structures in ontic structural realism
... terms of object talk, qua being a certain way, that is, by having certain qualities, objects have the power to produce other objects, or other properties in objects. Take charge for example: insofar as charge is a qualitative property, distinct from e.g. mass, it is the power to build up an electrom ...
... terms of object talk, qua being a certain way, that is, by having certain qualities, objects have the power to produce other objects, or other properties in objects. Take charge for example: insofar as charge is a qualitative property, distinct from e.g. mass, it is the power to build up an electrom ...
On the Reality of Gauge Potentials - Philsci
... here by Feynman 1965 in his influential lectures. Different interference patterns corresponded to different 4-vector fields Aµ (but the same electromagnetic field Fµν = ∂µ Aν - ∂ν Aµ) in the space-time region accessible to the beam that produced them. But it was well known that not only the electrom ...
... here by Feynman 1965 in his influential lectures. Different interference patterns corresponded to different 4-vector fields Aµ (but the same electromagnetic field Fµν = ∂µ Aν - ∂ν Aµ) in the space-time region accessible to the beam that produced them. But it was well known that not only the electrom ...
slides:pptx - Experimental Elementary Particle Physics Group
... cone directions from those Use four-momentum re-summation ...
... cone directions from those Use four-momentum re-summation ...
Unusual ordered phases of highly frustrated magnets: a review
... the spatially anisotropic J − J 0 model with additional ringexchange (involving four spins and higher order) terms. It is widely believed that these materials are weak Mott insulators in a sense of being close to a metal-insulator transition. As such, they are best described by distorted t − t0 − U ...
... the spatially anisotropic J − J 0 model with additional ringexchange (involving four spins and higher order) terms. It is widely believed that these materials are weak Mott insulators in a sense of being close to a metal-insulator transition. As such, they are best described by distorted t − t0 − U ...
Spin and Charge in Semiconductor Nanowires
... After years of sharing the same space, your office mates know almost everything about you. Frank Koppens, Floor Paauw, I am glad I could share it with you. Frank, thanks for the strange sounds you produce and for all the fun, especially while mingling in Bostonian bachelorettes. Floor, glad you were ...
... After years of sharing the same space, your office mates know almost everything about you. Frank Koppens, Floor Paauw, I am glad I could share it with you. Frank, thanks for the strange sounds you produce and for all the fun, especially while mingling in Bostonian bachelorettes. Floor, glad you were ...
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.