Skip to main content

Research Repository

Advanced Search

Outputs (2904)

Lifetimes and Heavy Quark Expansion (2015)
Book Chapter
Lenz, A. (2015). Lifetimes and Heavy Quark Expansion. In I. Bigi, P. Gambino, & T. Mannel (Eds.), QCD and heavy quarks : in memoriam Nikolai Uraltsev (63-109). World Scientific Publishing

Kolya Uraltsev was one of the inventors of the Heavy Quark Expansion (HQE), that describes inclusive weak decays of hadrons containing heavy quarks and in particular lifetimes. Besides giving a pedagogic introduction into the subject, we review the d... Read More about Lifetimes and Heavy Quark Expansion.

Nonstandard approach to gravity for the dark sector of the Universe (2013)
Other
Stichel, P., & Zakrzewski, W. (2013). Nonstandard approach to gravity for the dark sector of the Universe

We summarize the present state of research on the darkon fluid as a model for the dark sector of the Universe. Nonrelativistic massless particles are introduced as a realization of the Galilei group in an enlarged phase space. The additional degrees... Read More about Nonstandard approach to gravity for the dark sector of the Universe.

Bions and Instantons in Triple-well and Multi-well Potentials (2020)
Book Chapter
Dunne, G. V., Sulejmanpasic, T., & Ünsal, M. (2020). Bions and Instantons in Triple-well and Multi-well Potentials. In A. Niemi, T. Tomboulis, & K. K. Phua (Eds.), Roman Jackiw: 80th Birthday Festschrift (119-148). World Scientific Publishing. https://doi.org/10.1142/9789811210679_0015

Quantum systems with multiple degenerate classical harmonic minima exhibit new non-perturbative phenomena which are not present for the double-well and periodic potentials. The simplest characteristic example of this family is the triple-well potenti... Read More about Bions and Instantons in Triple-well and Multi-well Potentials.

Weak coupling of pomerons and the triple-Regge analysis. (2010)
Book Chapter
Luna, E., Khoze, V., Martin, A., & Ryskin, M. (2010). Weak coupling of pomerons and the triple-Regge analysis. In Y. Dokshitzer, P. Lévai, & J. Nyíri (Eds.), Gribov-80 memorial volume : quantum chromodynamics and beyond. Proceedings of the memorial workshop devoted to the 80th birthday of V.N. Gribov, The Abdus Salam International Centre for Theoretical Physics, Trieste, Italy, 26-28 May, 2010 (147-157). World Scientific Publishing. https://doi.org/10.1142/9789814350198_0015

We study the case when the triple-Pomeron vertex is assumed to have a vectorial form, that is, the amplitude of high-mass diffractive dissociation vanishes as as . We find that the available data in the triple-Reggeon region may be well described in... Read More about Weak coupling of pomerons and the triple-Regge analysis..

DNA Cages with Icosahedral Symmetry in Bionanotechnology (2009)
Book Chapter
Jonoska, N., Taormina, A., & Twarock, R. (2009). DNA Cages with Icosahedral Symmetry in Bionanotechnology. In A. Condon, D. Harel, & J. Kok (Eds.), Algorithmic bioprocesses (141-158). Springer Verlag. https://doi.org/10.1007/978-3-540-88869-7_9

Blueprints for polyhedral cages with icosahedral symmetry made of circular DNA molecules are provided. The basic rule is that every edge of the cage is met twice in opposite directions by the DNA strand(s), and vertex junctions are realized by a set... Read More about DNA Cages with Icosahedral Symmetry in Bionanotechnology.

Skyrmions and Nuclei. (2010)
Book Chapter
Battye, R., Manton, N., & Sutcliffe, P. (2010). Skyrmions and Nuclei. In G. Brown, & M. Rho (Eds.), The Multifaceted Skyrmion (3-39). World Scientific Publishing

Direct detection of WIMPs (2010)
Book Chapter
Cerdeño, D., & Green, A. (2010). Direct detection of WIMPs. In G. Bertone (Ed.), Particle dark matter: observations, models and searches (347-369). Cambridge University Press. https://doi.org/10.1017/cbo9780511770739.018

If the Milky Way’s DM halo is composed of WIMPs, then the WIMP flux on the Earth is of the order of 105(100 GeV/mχ)cm−2 s−1. This flux is suf- ficiently large that, even though the WIMPs are weakly interacting, a small but potentially measurable frac... Read More about Direct detection of WIMPs.

Hopfions (2018)
Book Chapter
Sutcliffe, P. (2018). Hopfions. In M. Ge, A. Niemi, K. Phua, & L. Takhtajan (Eds.), Ludwig Faddeev memorial volume : a life in mathematical physics (539-547). World Scientific Publishing. https://doi.org/10.1142/9789813233867_0025

More than 40 years ago, Faddeev proposed the existence of three-dimensional topological solitons classified by the integer-valued Hopf invariant. These solitons are now known as hopfions and have been investigated in a range of systems, including the... Read More about Hopfions.

Skyrmions from Harmonic Maps. (2001)
Book Chapter
Sutcliffe, P., & Zakrzewski, W. (2001). Skyrmions from Harmonic Maps. In H. Aratyn, & A. S. Sorin (Eds.), Integrable hierarchies and modern physical theories (215-241). Kluwer Academic Publishers. https://doi.org/10.1007/978-94-010-0720-7_7

We review some recent work on the construction of SU (N) skyrmions from rational, and more generally harmonic, maps from the two-sphere into complex projective spaces. We first describe the SU (2) case, where the rational map approximation is relativ... Read More about Skyrmions from Harmonic Maps..

Sigma models in 2+1 dimensions (1994)
Book Chapter
Ward, R. (1994). Sigma models in 2+1 dimensions. In A. P. Fordy, & J. C. Wood (Eds.), Harmonic maps and integrable systems (193-202). F. Vieweg. https://doi.org/10.1007/978-3-663-14092-4_9

Finite-energy harmonic maps from R2 into simple manifolds such as CP1 ≅ S2 or SU(2)≅ S3 are thoroughly understood. The relevant equations constitute an integrable system, the general solution of which can be written down explicitly. Such solutions ma... Read More about Sigma models in 2+1 dimensions.

Some Aspects of Dynamics of Topological Solitons (2008)
Presentation / Conference Contribution
Piette, B., & Zakrzewski, W. (2008). Some Aspects of Dynamics of Topological Solitons.

We present a general review of the dynamics of topological solitons and then discuss some recent work on the scattering of various solitons (in 1 and 2 dimensions) on potential obstructions.

Aspects of affine Toda field theory (1990)
Presentation / Conference Contribution
Braden, H., Corrigan, E., Dorey, P., & Sasaki, R. (1990, December). Aspects of affine Toda field theory