Results 71 to 80 of about 36,882 (207)

Combinatorics of Boundaries in String Theory [PDF]

, 1994
We investigate the possibility that stringy nonperturbative effects appear as holes in the world-sheet. We focus on the case of Dirichlet string theory, which we argue should be formulated differently than in previous work, and we find that the effects ...
A. Cohen, A. Cohen, A. Cohen, B. Grinstein, D. J. Gross, D. Lewellen, E. Brézin, E. F. Corrigan, G. Parisi, J. Atick, J. Cardy, J. Dai, J. H. Schwarz, J. Liu, Joseph Polchinski, M. B. Green, M. B. Green, M. B. Green, M. B. Green, M. B. Green, M. B. Green, M. Li, M. R. Douglas, M. R. Douglas, N. Ishibashi, P. Ginsparg, R. Leigh, S. Shenker, W. Fischler, W. Fischler, W. Siegel   +30 more
core   +3 more sources

Deforming the Double‐Scaled SYK and Reaching the Stretched Horizon From Finite Cutoff Holography

Fortschritte der Physik, Volume 74, Issue 5, May 2026.
ABSTRACT We study the properties of the double‐scaled SYK (DSSYK) model under chord Hamiltonian deformations based on finite cutoff holography for general dilaton gravity theories with Dirichlet boundaries. The formalism immediately incorporates a lower‐dimensional analog of TT¯(+Λ2)$\text{T}\overline{\text{T}}(+\Lambda _2)$ deformations, denoted T2 ...
Sergio E. Aguilar‐Gutierrez
wiley   +1 more source

Phase-locking in dynamical systems and quantum mechanics

Journal of High Energy Physics
In this study, we discuss the Prüfer transform that connects the dynamical system on the torus and the Hill equation, which is interpreted as either the equation of motion for the parametric oscillator or the Schrödinger equation with periodic potential.
Artem Alexandrov, Alexey Glutsyuk, Alexander Gorsky   +2 more
doaj   +1 more source

Nonperturbative effects in heavy quarkonia

, 1994
An effective hamiltonian for heavy quarkonia is derived from QCD by separating gluonic fields in background and quantum fields and neglecting anharmonic contributions. Mesonic states with nonperturbative gluonic components are constructed. These states are invariant under gauge changes of the background fields and form an orthogonal basis.
Nunes, C. A. A., Navarra, F. S., Ring, P., Schaden, M.   +3 more
openaire   +2 more sources

Uracil–Peptide–Pyrene Conjugates as Cu2+‐Sensitive Probes Targeting DNA, RNA, and Biorelevant Model Membranes

ChemBioChem, Volume 27, Issue 8, April 2026.
We introduce uracil–triazole–pyrene peptidomimetics whose tunable peptide linkers precisely control light emission, copper binding, and interactions with DNA and RNA. Fine structural adjustments unlock selective biomolecular recognition and striking metal‐ and membrane‐responsive fluorescence, paving the way for a new generation of multifunctional ...
Dijana Pavlović Saftić, Lucija Lulić Horvat, Ivo Piantanida   +2 more
wiley   +1 more source

Derivative corrections to the Heisenberg-Euler effective action

Journal of High Energy Physics, 2021
We show that the leading derivative corrections to the Heisenberg-Euler effective action can be determined efficiently from the vacuum polarization tensor evaluated in a homogeneous constant background field.
Felix Karbstein
doaj   +1 more source

Quantum effective actions from nonperturbative worldline dynamics

, 2005
We demonstrate the feasibility of a nonperturbative analysis of quantum field theory in the worldline formalism with the help of an efficient numerical algorithm. In particular, we compute the effective action for a super-renormalizable field theory with
A.M. Polyakov, C. Fosco, C. Itzykson, C. Savkli, F. Bastianelli, F. David, G.V. Dunne, H. Gies, H. Gies, Holger Gies, J. Glimm, Joaquin Sanchez-Guillen, L. Magnea, L. Moyaerts, Ricardo A Vázquez, S.L. Lebedev, V. Weisskopf, V.P. Gusynin, W. Heisenberg   +18 more
core   +1 more source

Nonperturbative Quantum Electrodynamics in the Cherenkov Effect [PDF]

Physical Review X, 2018
Quantum electrodynamics (QED) is one of the most precisely tested theories in the history of science, giving accurate predictions to a wide range of experimental observations. Recent experimental advances allow for the ability to probe physics on extremely short attosecond timescales, enabling ultrafast imaging of quantum dynamics.
Roques-Carmes, Charles, Kaminer, Ido, Rivera, Nicholas H., Joannopoulos, John, Soljacic, Marin   +4 more
openaire   +4 more sources

Multi‐Scale Structural Insights Into Amphiphilic Model PEG–PCL Co‐Networks From LS and SANS

Macromolecular Chemistry and Physics, Volume 227, Issue 7, 14 April 2026.
We present a multiscale structural study of amphiphilic PEG–PCL co‐networks combining light scattering in THF and small‐angle neutron scattering in D2O. This dual‐solvent approach reveals how solvent quality, polymer volume fraction, and PEG/PCL interactions govern static and dynamic correlation lengths, network homogeneity, and nanoscale domain ...
Sebastian Seitel, Nora Fribiczer, Brian Carrick, Stephanie Ihmann, Frank Böhme, Bradley D. Olsen, Sebastian Seiffert   +6 more
wiley   +1 more source

Infrared renormalon contributions in gluon TMD at small-x

Nuclear Physics B, 2020
The nonperturbative uncertainties from the infrared renormalons in the (color dipole) gluon distribution is estimated. It is shown that non-linear saturation effects at small-x shift the first IR pole at the Borel plane from 2/β2 to 1/β2.
Nahid Vasim, Raktim Abir
doaj   +1 more source