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Semiclassical Origins of Density Functionals
Semiclassical Origins of Density Functionals

... Important features of these results include: (i) exact when v  0, where kF  N  1=2=L; (ii) highly nonlocal functionals of the potential through F , which is set globally; (iii) TF theory retains only the first terms, and EF differs because of this; (iv) even if low-lying orbitals have turning ...
QFT on curved spacetimes: axiomatic framework and applications
QFT on curved spacetimes: axiomatic framework and applications

... precisely expressed by the German word Nahwirkungsprinzip. It states that each degree of freedom is influenced only by a relatively small number of other degrees of freedom. This induces a concept of neighborhoods in the set of degrees of freedom. The original motivation for developing QFT was to co ...
Multinucleon Transfer Reactions and Quasifission Processes in
Multinucleon Transfer Reactions and Quasifission Processes in

... In Part II, we first investigate the MNT processes in 64 Ni+238 U reaction for which precise measurements of MNT cross sections were performed. From comparisons between MNT cross sections calculated by the TDHF theory combined with the PNP and those of the measurements, we again find reasonable agreem ...
Lattice Hadron Physics Initiative
Lattice Hadron Physics Initiative

Here - Blogs at UMass Amherst
Here - Blogs at UMass Amherst

... Model really developed hand in hand with Quantum Field Theory (QFT). Quantum Electrodynamics (QED) required the development of renormalization theory. Yang–Mills (YM) theory required the understanding of gauge invariance, path integrals and Faddeev–Popov ghosts. To be useful, Quantum Chromodynamics ...
Academia Sinica, Taipei, Taiwan, 06/2010, Yip Sungkit
Academia Sinica, Taipei, Taiwan, 06/2010, Yip Sungkit

... 2. For c3 = c4 = 0 mean field results 3. Gauge field A is U(1) and  is a scalar 4. The dual CFT (quiver SU(N) gauge theory) is known for some ƒ 5. By tuning ƒ we can reproduce different phase transitions ...
1 Introduction. Measurable and Nonmea
1 Introduction. Measurable and Nonmea

Developing BCS ideas in the former Soviet Union
Developing BCS ideas in the former Soviet Union

6. String Interactions
6. String Interactions

... undone by Weyl transformations. As we saw in Section 4, there are an infinite number of such conformal transformations. It looks like we have a whole lot of gauge fixing still to do. However, global issues actually mean that there’s less remnant gauge symmetry than you might think. In Section 4, we ...
Renormalization group running of Newton`s constant G: The static
Renormalization group running of Newton`s constant G: The static

... derive, from first principles, the values of Newton’s constant and the cosmological constant, are placed unrealistically high. After all, in other well understood quantum field theories like QED and QCD the renormalized parameters (, S , . . .) are fixed by experiments, and no really compelling re ...
Lokal fulltext - Chalmers tekniska högskola
Lokal fulltext - Chalmers tekniska högskola

... In quantum theories, which we must use to describe the fundamental particles and interactions, we cannot say anything for certain, rather only give probabilities for a specific outcome. This is not just a case of our theories not being good enough, or that we are not able to specify initial conditio ...
The role of the electromagnetic field in the formation of domains in
The role of the electromagnetic field in the formation of domains in

... The interest in the general problem of the stability of mesoscopic and macroscopic complex systems arising from fluctuating quantum components also finds one strong motivation in the study of the physically relevant problem of defect formation during the process of nonequilibrium symmetry breaking p ...
The Effective Action for Local Composite Operators Φ2(x) and Φ4(x)
The Effective Action for Local Composite Operators Φ2(x) and Φ4(x)

-1- Do the Laws of Nature and Physics Agree About What... Forbidden? Mario Rabinowitz
-1- Do the Laws of Nature and Physics Agree About What... Forbidden? Mario Rabinowitz

Quantum cobordisms and formal group laws
Quantum cobordisms and formal group laws

... the well-known fact that for i = 1, ..., n, the class ψi on M0,n+1 does not coincide with the pull-back ft∗n+1 (ψi ) of its counterpart from M0,n but differs from it by the class of the divisor σi (M0,n). The family of “monotone functions” in (1) can alternatively be viewed as a family of quadratic ...
Three-wave coupling coefficients for perpendicular wave propagation in a magnetized plasma
Three-wave coupling coefficients for perpendicular wave propagation in a magnetized plasma

HOT ELECTRON TRANSPORT IN SEMICONDUCTOR SPACE
HOT ELECTRON TRANSPORT IN SEMICONDUCTOR SPACE

Applications of group theory
Applications of group theory

... group theoretic arguments underlie large parts of the theory of those entities. Galois theory uses groups to describe the symmetries of the roots of a polynomial (or more precisely the automorphisms of the algebras generated by these roots). The fundamental theorem of Galois theory provides a link b ...
Quantum Field Theory on Curved Backgrounds. II
Quantum Field Theory on Curved Backgrounds. II

... Abstract We study space-time symmetries in scalar quantum field theory on an arbitrary static space-time. We first consider Euclidean quantum field theory, and show that the isometry group is generated by one-parameter subgroups which have either selfadjoint or unitary quantizations. We then show th ...
Gauge Theories of the Strong and Electroweak Interactions
Gauge Theories of the Strong and Electroweak Interactions

The Fractional Quantum Hall Effect, Chern-Simons
The Fractional Quantum Hall Effect, Chern-Simons

... where c2 is the eigenvalue of the quadratic Casimir operator in the adjoint representation of the group G, normalized such that c2 = N, for G = SU(N). Let Uq(Lie G) denote the usual quantum deformation of the universal enveloping algebra of Lie G with deformation parameter q = exp ìITK [34]. We assu ...
Absorption of intense electromagnetic radiation in collisions of
Absorption of intense electromagnetic radiation in collisions of

... The situation is different when uE>>uT. In fact, even though the investigation of absorption of intense radiation was started quite long this research i s at present still incomplete. To explain this statement and justify the need for constructing the theory expounded below, of absorption of high-fr ...
Light Control using Organometallic Chromophores Johan Henriksson Link¨
Light Control using Organometallic Chromophores Johan Henriksson Link¨

Studying Quantum Field Theory
Studying Quantum Field Theory

Inclusive DIS in saturation models
Inclusive DIS in saturation models

...  We are only beginning to explore the high energy, many body dynamics of this theory What are the right effective degrees of freedom at high energies? -- gluons & sea quarks, dipoles, pomerons, strong fields? ...
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Yang–Mills theory

Yang–Mills theory is a gauge theory based on the SU(N) group, or more generally any compact, semi-simple Lie group. Yang–Mills theory seeks to describe the behavior of elementary particles using these non-Abelian Lie groups and is at the core of the unification of the electromagnetic and weak forces (i.e. U(1) × SU(2)) as well as quantum chromodynamics, the theory of the strong force (based on SU(3)). Thus it forms the basis of our understanding of particle physics, the Standard Model.
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