Results 51 to 60 of about 89,960 (192)

Renormalization Ambiguities in Chern-Simons Theory

, 1994
We introduce a new family of gauge invariant regularizations of Chern-Simons theories which generate one-loop renormalizations of the coupling constant of the form $k\to k+2 s c_v$ where $s$ can take any arbitrary integer value. In the particular case $s=
A. Coste, C. P. Martin, D. Bar-Natan, D. Freed, E. Guadagnini, E. Witten, F. Falceto, G. Giavarini, G. Luzón, J. L. López, L. Avarez-Gaumé, M. Asorey, M. Asorey, M. Asorey, S. Axelrod, W. Chen   +15 more
core   +2 more sources

Renormalization Group Summation and the Free Energy of Hot QCD [PDF]

, 2002
Using an approach developed in the context of zero-temperature QCD to systematically sum higher order effects whose form is fixed by the renormalization group equation, we sum to all orders the leading log (LL) and next-to-leading log (NLL) contributions
A. Rebhan, A.D. Linde, B. Kastening, B. Kastening, C.-X. Zhai, D. G. C. McKeon, D.E. Groom, D.J. Gross, E. Braaten, E. Gardi, G. Boyd, G. Cvetic̆, J.O. Andersen, J.O. Andersen, J.O. Andersen, J.P. Blaizot, J.P. Blaizot, J.P. Blaizot, M. Okamoto, M.R. Ahmady, P. Arnold, P.M. Stevenson, R.M. Corless, T. Hatsuda   +23 more
core   +2 more sources

Optimization and selection of Galileo triple-frequency carrier linear combination

Measurement + Control, 2021
The triple-frequency linear combination with a low noise, a long wavelength, and a weak ionosphere is beneficial to effectively eliminate or weaken the common errors, advance the reliability of cycle slip detection and repair, and speed up the ...
Jun Wang, Xurong Dong, Wei Fu, Di Yan, Zengkai Shi   +4 more
doaj   +1 more source

Improved HLLL Lattice Basis Reduction Algorithm to Solve GNSS Integer Ambiguity

International Journal of Aerospace Engineering, 2023
Recently, lattice theory has been widely used for integer ambiguity resolution in the Global Navigation Satellite System (GNSS). When using lattice theory to deal with integer ambiguity, we need to reduce the correlation between lattice bases to ensure ...
Kezhao Li, Chendong Tian, Yingxiang Jiao, Zhe Yue   +3 more
doaj   +1 more source

A Multi-Frequency Galileo PPP-RTK Convergence Analysis with an Emphasis on the Role of Frequency Spacing

Remote Sensing, 2021
The single-receiver integer ambiguity resolution-enabled variant of precise point positioning (PPP), namely PPP-RTK, has proven to be crucial in reducing the long convergence time of PPP solutions through the recovery of the integerness of the user ...
Dimitrios Psychas, Peter J. G. Teunissen, Sandra Verhagen   +2 more
doaj   +1 more source

The Future of Single-Frequency Integer Ambiguity Resolution

, 2011
The coming decade will bring a proliferation of Global Navigation Satellite Systems (GNSSs) that are likely to enable a much wider range of demanding applications compared to the current GPS-only situation. One such important area of application is single-frequency real-time kinematic (RTK) positioning.
Verhagen, S, Teunissen, Peter, Odijk, D
openaire   +4 more sources

On-sky multi-wavelength phasing of segmented telescopes with the Zernike phase contrast sensor

, 2011
Future Extremely Large Telescopes will adopt segmented primary mirrors with several hundreds of segments. Cophasing of the segments together is essential to reach high wavefront quality.
Cavarroc, Chanan, Chanan, Dohlen, Dohlen, Dupuy, Gilmozzi, Gonte, Houairi, Lofdahl, Martinez, Mazzoleni, Montoya-Martínez, Nelson, Pinna, Polhemus, Surdej, Wilhelm, Yaitskova, Yaitskova, Zernike   +20 more
core   +3 more sources

Center vortex model for the infrared sector of Yang-Mills theory - Topological Susceptibility [PDF]

, 2000
A definition of the Pontryagin index for SU(2) center vortex world-surfaces composed of plaquettes on a hypercubic lattice is constructed. It is used to evaluate the topological susceptibility in a previously defined random surface model for vortices ...
't Hooft, 't Hooft, 't Hooft, 't Hooft, Aharonov, Alexandrou, Alexandrou, Ambjørn, Ambjørn, Ambjørn, Bali, Banks, Belavin, Bertle, Bornyakov, Brower, Brower, Callan, Cornwall, Cornwall, Cornwall, de Forcrand, Debbio, Del Debbio, Del Debbio, DiGiacomo, Engelhardt, Engelhardt, Engelhardt, Engelhardt, Faber, Faber, Faber, Hart, Ilgenfritz, Kovács, Kronfeld, Langfeld, Lüscher, M. Engelhardt, Mack, Mack, Mack, Mack, Mack, Mandelstam, Montero, Montero, Nielsen, Olesen, Pérez, Shuryak, Shuryak, Suzuki, van Baal, Veneziano, Witten   +56 more
core   +2 more sources

The impact of new signals on precise marine navigation - initial results from an experiment in Harwich Harbour [PDF]

, 2008
The General Lighthouse Authorities of the United Kingdom and Ireland (GLAs) are supporting a project at University College London (UCL) to study whether it is possible to meet the International Maritime Organisation’s (IMO) future requirements for port ...
Cross, PA, Grant, A, Parkins, AJ
core  

Structure of nonlinear gauge transformations

, 1998
Nonlinear Doebner-Goldin [Phys. Rev. A 54, 3764 (1996)] gauge transformations (NGT) defined in terms of a wave function $\psi(x)$ do not form a group. To get a group property one has to consider transformations that act differently on different branches ...
B. Mielnik, B. Mielnik, G. A. Goldin, H.-D. Doebner, H.-D. Doebner, H.-D. Doebner, I. Białynicki-Birula, I. Białynicki-Birula, M. G. Raymer, Marek Czachor, P. Nattermann, P. Nattermann, P. Nattermann, P. Nattermann, P. Nattermann, R. Feynman, S. Weigert, S. Weigert, W. Lücke   +18 more
core   +1 more source