Mostrando 141 - 160 Resultados de 408 Para Buscar '"instantón"', tiempo de consulta: 0.10s Limitar resultados
  1. 141
    por Terrisse, Robin
    Publicado 2019
    “…--HTML-->I will present a four-dimensional consistent truncation of type IIA supergravity in the presence of fermionic condensates generated by gravitational instantons. The condensates are controlled by the ratio of the characteristic length of the internal Calabi-Yau to the string length, and can be fine-tuned to be dominant in a region of large volume and small string coupling. …”
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    Consistent truncation and de Sitter space from gravitational instantons
  2. 142
    por Nielsen, N K, Schrör, B
    Publicado 1977
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    Saturation Of Gauge Invariant Schwinger Model Correlation Functions By Instantons
  3. 143
    “…In particular we find that the A-infinity relation for the annulus provides a reconstruction of annulus instantons out of disk instantons. We note in passing that the naive application of the Cardy-constraint does not hold for our correlators, confirming expectations. …”
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    Instanton Geometry and Quantum A-infinity structure on the Elliptic Curve
  4. 144
    por White, Alan R
    Publicado 1976
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    The Reggeon field theory beyond the critical point an instanton vacuum
  5. 145
    por Ibáñez, L E, Uranga, Angel M
    Publicado 2006
    “…This mass term may be quite large since this is not a gauge instanton and $Re U$ is not directly related to SM gauge couplings. …”
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    Neutrino Majorana Masses from String Theory Instanton Effects
  6. 146
    “…We analyze the modular properties of D3-brane instanton corrections to the hypermultiplet moduli space in type IIB string theory compactified on a Calabi-Yau threefold. …”
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    Multiple D3-instantons and mock modular forms II
  7. 147
    “…We search for the appropriate instanton effects that generate the missing Yukawa couplings in the SU(5) vacua we constructed and find them in a small subset of them.…”
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    info:eu-repo/semantics/article
    SU(5) orientifolds, Yukawa couplings, Stringy Instantons and Proton Decay
  8. 148
    por Römer, H
    Publicado 1977
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    Number of parameters for instanton solutions on arbitrary four-dimensional compact manifolds
  9. 149
    “…Within the two-dimensional CP/sup n-1/ model the authors calculate the instanton density function in the dilute-gas limit by studying the quantum fluctuations in the one-instanton sector in the one-loop approximation. …”
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    Quantum fluctuations in the one-instanton sector of the CP$^{n-1}$ model
  10. 150
    “…We study chiral gauge-invariant operators on moduli spaces of G instantons for any classical group G on A-type ALE spaces using Hilbert Series (HS). …”
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    Hilbert Series for Moduli Spaces of Instantons on C^2/Z_n
  11. 151
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    Multi-instantons do not stop the cross-section at half the 't Hooft suppression
  12. 152
    “…We discuss the general properties of the relevant instanton solutions which dominate the transition amplitudes at finite energy, and find the solutions numerically. …”
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    Finite energy instantons in the O(3) non-linear sigma model
  13. 153
    por Salvati, Flavio
    Publicado 2021
    “…In this project we studied the abundances of strange $K_s ^0$ and $\Lambda$ particles in MC-Instanton and MC-EPOS samples. By comparing our results to ATLAS data, we assessed the suitability of these observables in the experimental detection of QCD Instanton induced processes at the LHC. …”
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    Measuring $K_s ^0$ and $\Lambda$ abundances in QCD Instanton induced processes.
  14. 154
    “…We focus on the Calabi-Yau space WP_{1,1,2, 8, 12}(24) and show how some of its instanton numbers are related to coefficients of certain modular forms. …”
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    Instanton numbers and exchange symmetries in N=2 dual string pairs
  15. 155
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    Modular forms and instanton numbers in N = 2 dual string pairs
  16. 156
    por Kochelev, N I, Nowak, Wolf-Dieter
    Publicado 1996
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    Estimate of the instanton contribution to the double spin asymmetry in J/$\psi$ leptoproduction
  17. 157
    “…The recent proposal by Hawking and Turok for obtaining an open inflationary universe from singular instantons makes use of low-energy effective Lagrangians describing gravity coupled to scalars and non-propagating antisymmetric tensors. …”
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    Instanton Cosmology and Domain Walls from M-theory and String Theory
  18. 158
    por Barbon, J.L.F., Pasquinucci, A.
    Publicado 2000
    “…We consider the interaction between instantons and anti-instantons infour-dimensional N=4 super-Yang-Mills theory at large N and large 't Hooftcoupling as described by D-instantons via AdS/CFT duality. …”
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    A Note on Interactions of (Non-Commutative) Instantons Via AdS/CFT
  19. 159
    por Mayr, P.
    Publicado 2002
    “…We compute the instanton expansions of the holomorphic couplings in the effective action of certain $\cx N=1$ supersymmetric four-dimensional open string vacua. …”
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    Summing up Open String Instantons and N=1 String Amplitudes
  20. 160
    por Bichl, Andreas A.
    Publicado 2003
    “…We estimate the instanton-induced vacuum energy in non-commutative U(1) Yang-Mills theory in four dimensions. …”
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    A Note on UV/IR Mixing and Non-Commutative Instanton Calculus
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