Results 41 to 50 of about 1,767 (185)
Design and performance of GaSb-based quantum cascade detectors. [PDF]
NanophotonicsAbstract InAs/AlSb quantum cascade detectors (QCDs) grown strain‐balanced on GaSb substrates are presented. This material system offers intrinsic performance‐improving properties, like a low effective electron mass of the well material of 0.026 m0, enhancing the optical transition strength, and a high conduction band offset of 2.28 eV, reducing the ...
Giparakis M +6 more
europepmc +2 more sources
The γπ → ππ anomaly from lattice QCD and dispersion relations
Journal of High Energy Physics, 2021 We propose a formalism to extract the γπ → ππ chiral anomaly F 3π from calculations in lattice QCD performed at larger-than-physical pion masses. To this end, we start from a dispersive representation of the γ (*) π → ππ amplitude, whose main quark-mass ...
Malwin Niehus +2 more
doaj +1 more source
Berry Phase in Lattice QCD [PDF]
Physical Review Letters, 2016 We propose the lattice QCD calculation of the Berry phase which is defined by the ground state of a single fermion. We perform the ground-state projection of a single-fermion propagator, construct the Berry link variable on a momentum-space lattice, and calculate the Berry phase. As the first application, the first Chern number of the (2+1)-dimensional
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AIP Conference Proceedings, 1994 Significant progress has recently been achieved in the lattice gauge theory calculations required for extracting the fundamental parameters of the standard model from experiment. Recent lattice determinations of such quantities as the kaon $B$ parameter, the mass of the $b$ quark, and the strong coupling constant have produced results and uncertainties
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Fortschritte der Physik, Volume 74, Issue 4, April 2026.Abstract String theory has strong implications for cosmology, implying the absence of a cosmological constant, ruling out single‐field slow‐roll inflation, and that black holes decay. The origins of these statements are elucidated within the string‐theoretical swampland programme.
Kay Lehnert
wiley +1 more source
Search of QCD phase transition points in the canonical approach of the NJL model
Physics Letters B, 2019 We study the Lee-Yang zeros in the canonical approach to search phase transition points at finite temperature and density in the Nambu-Jona-Lasinio (NJL) model as an effective model of QCD.
Masayuki Wakayama, Atsushi Hosaka
doaj +1 more source
Journal of Physics: Conference Series, 2006 In recent years, we used lattice QCD to calculate some quantities that were unknown or poorly known. They are the $q^2$ dependence of the form factor in semileptonic $D\to Klν$ decay, the leptonic decay constants of the $D^+$ and $D_s$ mesons, and the mass of the $B_c$ meson.
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Lattice QCD and string theory [PDF]
Proceedings of XXIIIrd International Symposium on Lattice Field Theory — PoS(LAT2005), 2005 Bosonic string formation in gauge theories is reviewed with particular attention to the confining flux in lattice QCD and its string theory description. Recent results on the Casimir energy of the ground state and the string excitation spectrum are analyzed in the Dirichlet string limit of large separation between static sources.
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Annalen der Physik, Volume 538, Issue 1, January 2026.The BRST invariant Lagrangian of the gravitationally interacting U(1)$U(1)$ gauge theory, namely the Quantum GraviElectro Dynamics (QGED). The Yan–Mills theory with the Hilbert–Einstein gravitational Lagrangian, namely the Yang–Mills–Utiyama (YMU) theory, is defined and quantised using the standard procedure. The theory is perturbatively renormalisable,
Yoshimasa Kurihara
wiley +1 more source
, 2008 Schladming Winter School lectures (to be published in the Proceedings); 56 pages ...
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