Zobrazeno 1 - 10
of 504
pro vyhledávání: '"Lizzi, F."'
Publikováno v:
In Nuclear Inst. and Methods in Physics Research, A December 2024 1069
We argue that the ground state of a field theory, in the presence of charged particles, becomes an entangled state involving an infinity of soft photons. The quantum field vacuum is altered by the passage of a uniformly moving charge, leaving in its
Externí odkaz:
http://arxiv.org/abs/1802.03922
Publikováno v:
J. Phys. A: Math. Theor. 51 (2018) 255203
We discuss the Kirillov method for massless Wigner particles, usually (mis)named "continuous spin" or "infinite spin" particles. These appear in Wigner's classification of the unitary representations of the Poincar\'e group, labelled by elements of t
Externí odkaz:
http://arxiv.org/abs/1711.09608
The meaning of local observables is poorly understood in gauge theories, not to speak of quantum gravity. As a step towards a better understanding we study asymptotic (infrared) transformation in local quantum physics. Our observables are smeared by
Externí odkaz:
http://arxiv.org/abs/1612.05886
Publikováno v:
Phys. Rev. Lett. 111, 011601 (2013)
Our understanding of quantum gravity suggests that at the Planck scale the usual geometry loses its meaning. If so, the quest for grand unification in a large non-abelian group naturally endowed with the property of asymptotic freedom may also lose i
Externí odkaz:
http://arxiv.org/abs/1302.4321
Autor:
Frampton, P. H., Melchiorri, A., Bonora, L., Bracic, A. Borstnik, Borstnik, N. Mankoc, Nielsen, H. B., Froggatt, C. D., Shafi, Q., Alvarez, E., Lizzi, F.
Publikováno v:
Bled workshops in physics, Vol.4, No. 2-3, DMFA Zaloznistvo, Ljubljana, Dec, 2003
Contents of Part 1: 1. Status of the Standard Model(P.H. Frampton), 2. Cosmological Constraints from MBA and Polarization (A. Melchiorri), 3. AdS/CFT Correspondence and Unification at About 4 TeV (P.H. Frampton), 4. New Solutions in String Field Theo
Externí odkaz:
http://arxiv.org/abs/hep-ph/0401043
Publikováno v:
Mod.Phys.Lett. A18 (2003) 2381-2388
We present a brief review of the fuzzy disc, the finite algebra approximating functions on a disc, which we have introduced earlier. We also present a comparison with recent papers of Balachandran, Gupta and K\"urk\c{c}\"{u}o\v{g}lu, and of Pinzul an
Externí odkaz:
http://arxiv.org/abs/hep-th/0309128
Publikováno v:
JHEP 0308:057,2003
We introduce a finite dimensional matrix model approximation to the algebra of functions on a disc based on noncommutative geometry. The algebra is a subalgebra of the one characterizing the noncommutative plane with a * product and depends on two pa
Externí odkaz:
http://arxiv.org/abs/hep-th/0306247
Publikováno v:
JHEP0204:026,2002
While there has been growing interest for noncommutative spaces in recent times, most examples have been based on the simplest noncommutative algebra: [x_i,x_j]=i theta_{ij}. Here we present new classes of (non-formal) deformed products associated to
Externí odkaz:
http://arxiv.org/abs/hep-th/0112092
Publikováno v:
JHEP 0108 (2001) 032
A detailed description of the infinite-dimensional Lie algebra of star-gauge transformations in noncommutative Yang-Mills theory is presented. Various descriptions of this algebra are given in terms of inner automorphisms of the underlying deformed a
Externí odkaz:
http://arxiv.org/abs/hep-th/0107115