Results 71 to 80 of about 3,202 (225)

Nonperturbative effects in heavy quarkonia

open access: yes, 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.   +3 more
openaire   +2 more sources

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

open access: yesChemBioChem, 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   +2 more
wiley   +1 more source

Infrared renormalon contributions in gluon TMD at small-x

open access: yesNuclear 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

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

open access: yesMacromolecular 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   +6 more
wiley   +1 more source

Nonperturbative methods in quantum field theory [PDF]

open access: yes, 1996
It is becoming increasingly important to develop methods to evaluate field theory outside the region of validity of perturbative expansions. For example, it is well known in the standard electroweak model that the magnitude of the scalar self coupling is
Walker, Michael A
core  

Nonperturbative correlation effects in diluted magnetic semiconductors [PDF]

open access: yes, 2016
The effects of carrier-impurity correlations due to a Kondo-like spin-spin interaction in diluted magnetic semiconductors are investigated. These correlations are not only responsible for a transfer of spins between the carriers and the impurities, but ...
Cygorek, Moritz   +2 more
core   +1 more source

New nonperturbative scales and glueballs in confining supersymmetric gauge theories [PDF]

open access: yes, 2018
We show that new nonperturbative scales exist in four-dimensional N $$ \mathcal{N} $$ = 1 super-Yang-Mills theory compactified on a circle, with an iterated-exponential dependence on the inverse gauge coupling.
Poppitz, Erich   +3 more
core   +2 more sources

Nonperturbative Effects on the String World Sheet (Ii)

open access: yesNuclear Physics B, 1987
We show that the space-time superpotential, which is known to receive no string theoretic corrections in finite orders in α′, is modified by world-sheet instantons. This has a number of interesting consequences for the physics of compactification schemes which lead to low-energy supersymmetry.
M. Dine   +3 more
openaire   +1 more source

Exact local distribution of the absolutely continuous spectral measure

open access: yesProceedings of the London Mathematical Society, Volume 132, Issue 4, April 2026.
Abstract It is well‐established that the spectral measure for one‐frequency Schrödinger operators with Diophantine frequencies exhibits optimal 1/2$1/2$‐Hölder continuity within the absolutely continuous spectrum (Avila and Jitomirskaya, Commun. Math. Phys. 301 (2011), 563–581).
Xianzhe Li, Jiangong You, Qi Zhou
wiley   +1 more source

Nonperturbative Quantum Electrodynamics in the Cherenkov Effect [PDF]

open access: yesPhysical 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   +4 more
openaire   +4 more sources

Home - About - Disclaimer - Privacy