Interactive Quantum Mechanics
Quantum Experiments on the Computer
Page
%P
-
Book
-
Article
Nonrenormalizable superpotential in four-dimensional string models
A construction of an effective nonrenormalizable superpotential has been discussed within the approach of a four-dimensional heterotic superstring with free fermions on the world sheet. On the basis of N=2 superc...
-
Article
Collinear asymptotic dynamics for massive particles
The dynamics of massive particles in the collinear high momentum regime is investigated. Methods hitherto exploiting large time asymptotic Hamiltonians in the Dirac picture for the treatment of infrared diverg...
-
Article
Higher order radiative corrections to the QED Compton events at HERA
We estimate the higher order QED corrections to the QED Compton events at HERA employing the leading logarithmic approximation to all orders in α. The Compton events are events of the typee+p→e′+γ+ Hadrons, where
-
Article
Unitary approximation for radiative high energy scattering processes: Application to Bhabha scattering
We describe how to apply the unitary approximation to high energy scattering processes which involve the radiation of arbitrarily many photons. We compare our results to calculations of inclusive quantities us...
-
Article
The photon two-point function in unitary approximation
The photon two-point function is calculated using the exponential representation for the time-evolution operator taking into account terms up to second order ine in the exponent. The limiting case of vanishing el...
-
Article
Spinless bosons in electron-positron annihilation
The contributions to the processes \(e^ + e^ - \to \mu ^ + \mu ^ - ,q\bar q,\gamma \gamma ,e^ + e^ - \) , medi...
-
Article
First results of a calculation of the long range quark-antiquark potential from asymptotic QCD dynamics
Starting from the asymptotic dynamics of the quark-gluon interaction for large distances we calculate the first two terms of the divergent phase of elastic quark-antiquark scattering. This phase in turn allows...
-
Article
Asymptotic dynamics of QCD, coherent states, and the quark form factor
The method of asymptotic dynamics for large times developed by Kulish and Fadde'ev for QED is applied to QCD. We study the solution and calculate the on shell quark form factor in leading logarithmic order.
-
Article
Contributions of weak interactions to the process \(e^ + e^ - \to \bar v_\tau X^ + v_\tau X^ - \)
We calculate the differential cross section for the processe + e − →γ for longitudinal or transversal polarization of the electron positron beams. The resulting formulae are evaluated using Monte Carlo methods to...
-
Article
Minimal gauge model for the leptonic interactions with fixed Weinberg angle of 30°
A gauge model for leptons is proposed, based on the groupSU 3. It establishes a minimal extension of the standard Weinberg-Salam model fixing the angle toθ w = 30°. An investigation of μ-decay and elastic νμe sca...
-
Article
FlavourSU 3×U 1 gauge model with fundamental triplets and singlets
ASU 3×U 1 gauge model for the electromagnetic and weak interactions of leptons and quarks is suggested as an extension of a pureSU 3 model for leptons, proposed in a previous paper, yielding a fixed Weinberg angl...
-
Article
Axes and scalar measures of two-jet and three-jet events
In a comparison of the jet measures sphericity, spherocity and thrust we find that the spherocity axis exhibits strong instabilities against small changes of particle directions and points in many cases in the...
-
Article
Compatibility of the Zweig-Iisuka rule with unitarity
-
Article
Buchbesprechungen
-
Article
Buchbesprechungen
-
Article
The method of characteristics for functional-derivative equations
The method of characteristics is adapted to first-order functional-derivative equations. The general solution is then found to three such equations in mathematical physics. Topological questions are not consid...
-
Article
Generalized Veneziano model for pion scattering off isovector currents and the scaling limit
Starting from a local one-particle approximation scheme for the commutator of two conserved currents, we construct a generalized Veneziano model for pion scattering off neutral and charged isovector currents, ...
-
Article
Local one-particle approximation to commutators of conserved currents
The constraints imposed by current conservation are studied within alocal one-particle approximation scheme for the case of a commutator of two isovector currents. The model satisfies the current algebra relation...
-
Article
On a covariant formulation of the saturation problem for equal-time commutators
An approximate saturation of the equal-time commutators taking into account the one-particle intermediate states and related disconnected parts, as well as disconnected parts of two-particle states, leads to a...
