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Fritz W. Bopp

Publications and source records attributed to Fritz W. Bopp.

15 recordsLinked to original sources
arXiv2021

Measurement Problem in Quantum Mechanics and the Surjection Hypothesis

Starting with unitary quantum dynamics, we investigate how to add quantum measurements. Quantum measurements have four essential components: the furcation, the witness production, an alignment projection, and the actual choice decision. The first two components still lie in the domain of unitary quantum dynamics. The decoherence concept explains the third contribution. It can be based on the requirement that witnesses reaching the end of time on the wave function side and the conjugate one have to be identical. In this way, it also stays within the quantum dynamics domain. The surjection hypothesis explains the actual choice decision. It is based on a two boundary interpretation applied to the complete quantum universe. It offers a simple way to reduce these seemingly random projections to purely deterministic unitary quantum dynamics, eliminating the measurement problem.

quant-ph↗
arXiv2020

An intricate quantum statistical effect and the foundation of quantum mechanics

An intricate quantum statistical effect guides us to a deterministic, non-causal quantum universe with given fixed initial and final state density matrix. A concept is developed on how and where something like macroscopic physics can emerge. The concept does not allow to incorporate philosophically indispensable free will decisions. If the quantum world and its conjugate evolve independently one can replace both fixed final states by a matching common one. This allows for external manipulations done in the quantum world and its conjugate which do not otherwise alter the basic structure. In a big bang / big crunch universe the expanding part can be attributed to the quantum world and the contracting part to the conjugate one. The obtained bi-linear picture has a number of beautiful and exciting consequences.

quant-ph↗
arXiv2018

Causal Classical Physics in Time Symmetric Quantum Mechanics

The letter submitted is an executive summary of our previous paper. To solve the Einstein Podolsky Rosen 'paradox' the two boundary quantum mechanics is taken as self consistent interpretation of quantum dynamics. The difficulty with this interpretation is to reconcile it with classical physics. To avoid macroscopic backward causation two 'corresponding transition rules' are formulated which specify needed properties of macroscopic observations and manipulations. The apparent classical causal decision tree requires to understand the classically unchosen options. They are taken to occur with an 'incomplete knowledge' of the boundary states typically in macroscopic considerations. The precise boundary conditions with given phases then select the actual measured path and this selection is mistaken to happen at the time of measurement. The apparent time direction of the decision tree originates in an assumed relative proximity to the initial state. Only the far away final state allows for classically distinct options to be selected from. Cosmologically the picture could correspond to a big bang initial and a hugely extended final state scenario. It is speculated that it might also hold for a big bang/big crunch world. If this would be the case the Born probability postulate could find a natural explanation if we coexist in the expanding and the correlated CPT conjugate contracting world.

quant-ph↗
arXiv2017

Time Symmetric Quantum Mechanics and Causal Classical Physics

A two boundary quantum mechanics without time ordered causal structure is advocated as consistent theory. The apparent causal structure of usual "near future" macroscopic phenomena is attributed to a cosmological asymmetry and to rules governing the transition between microscopic to macroscopic observations. Our interest is a heuristic understanding of the resulting macroscopic physics.

quant-ph↗
arXiv2010

The Concept of an Emergent Cosmographic Vacuum

The argument for an "Emergent Cosmographic Vacuum" state which generates fermion and weak boson masses is outlined. Its limitations and its consequences are discussed. Predictions for LHC are presented.

hep-ph↗
arXiv2009

Is a Rich Vacuum Structure Responsible for Fermion and Weak-Boson Masses

An unconventional Cosmographical model for a generation of fermion and week boson masses without electro-weak Higgs bosons is outlined. It is based on a rich, non perturbative vacuum structure taken to be an object of qualitative phenomenology. Numerous far reaching and astonishing consequences are discussed.

hep-ph↗
arXiv2007

A Model with a Cosmographic Landscape

To argue against a too narrow focus in the LHC Higgs search, a simpleminded model with a rich "cosmographic" vacuum structure for the generation of masses is developed on a conceptual level. In this framework Higgs like bosons which could exist in the LHC mass range have no preference to decay in heavy flavors.

hep-ph↗
arXiv2003

Charge Fluctuation in Heavy Ion Collisions

Charge fluctuations observed in early fixed-target proton-proton experiments are consistent with string models. In central heavy ion events the picture can change in two ways: strings can interact and find new ways to hadronize or they can be effectively inactivated to lose their dynamical role as ordering mechanism. Widely different charge fluctuations can be expected. The dispersion of the charges in a central rapidity box is an advantageous measure. In an explicit Dual-Parton-Model calculation using the DPMJET code and a randomized modification to simulated charge equilibrium, various energies and different nuclear sizes were considered. Local fluctuations were found to be a serious problem. However, for large enough detection regions charged particle fluctuations can provide a clear signal reflecting the basic dynamics of central heavy ion processes.

hep-ph↗
arXiv2002

Charged Particle Fluctuation in Heavy Ion Collisions

Comparing quantities to analyze charged fluctuations in heavy ion experiments the dispersion of the charges in a central rapidity box was found to be best suited. Various energies and different nuclear sizes are considered in an explicit Dual-Parton-Model calculation using the DPMJET code and a randomized modification to simulated charge equilibrium. For large enough detection regions charged particle fluctuations can provide a signal of the basic dynamics of heavy ion processes.

hep-ph↗
arXiv2001

Charged Particle Fluctuation as Signal of the Dynamics in Heavy Ion Processes

We compare the dispersion of the charges in a central rapidity box according to the Dual Parton Model with the predictions of statistical models. Significant deviations are found in heavy ion collisions at RHIC and LHC energies. Hence the charged particle fluctuations should provide a clear signal of the dynamics of heavy ion processes. They should allow to directly measure the degree of thermalization in a quantitative way.

hep-ph↗
arXiv2001

Baryon Transport in Dual Models and the Possibility of a Backward Peak in Diffraction

Dual string models contain significant baryon transfers and seem essentially consistent with the available data. We here turn to a careful consideration of the relevant topological structures. The baryon transfer is associated with one of two possible types of cuts in various baryonium exchanges. As the baryonium with the highest intercept easily couples to two Pomerons such transfers should occur abundantly in percolating dense Pomerons systems. From the color structure this quark-less baryonium can be identified with an Odderon exchange. As the Odderon is predicted to have an almost Pomeron -like trajectory it has to involve small coupling constants so that steeper trajectories can initially determine the data. As this suppression is not anticipated for diffractive processes a tiny observable backward peak should occur in the initial baryon distribution for massive diffractive systems.

hep-ph↗
arXiv2000

Charged Particle Fluctuations as a Signal of the Dynamics of Heavy Ion Processes

Comparing proposed quantities to analyze charged particle fluctuations in heavy ion experiments we find the dispersion of the charges in a central rapidity box as best suited. Various energies and different nuclear sizes were considered in an explicit Dual-Parton-Model calculation using the DPMJET code. A definite deviation from predictions of recently considered statistical models was obtained. Hence the charged particle fluctuations should provide a clear signal of the dynamics of heavy ion processes. They should allow to directly measure the degree of thermalization in a quantitative way.

hep-ph↗
arXiv2000

Baryon Transport in Dual Models and the Possibility of a Backward Peak in Diffraction

We begin to briefly survey the experimental and conceptual side of baryon transfers in particle scattering. A discussion of baryon transfers in heavy ion scattering follows. It shortly reviews existing string model concepts, which were found to be consistent with the data. With this motivation we turn to a more careful consideration of the relevant topological structures. The baryon transfer is associated with one of two possible cuts in baryonium exchange. From the color structure the baryonium can be identified with an Odderon exchange. We conjecture that the two Odderon cuts occur with an opposite sign and partially cancel. As the Odderon is predicted to have a rather high trajectory it has to involve small coupling constants. As this suppression is not anticipated for diffractive processes a tiny observable backward peak is argued to occur in the initial baryon distribution in massive diffractive systems.

hep-ph↗
arXiv2000

Central Baryons in Dual Models and the Possibility of a Backward Peak in Diffraction

Two distinct interactions of Pomerons should occur in dense multi-string events. Besides the usual triple Pomeron processes transitions to membraned cylinders can be expected to contribute in a significant way. They offer an efficient mechanism for central baryon production and for the long range transport of initial baryons. The slope of such an exchange should be quite low as it is related to the Odderon known from the leading logarithmic approximation. Such a flat trajectory has to be suppressed by small coupling constants. It is argued that this strong suppression does not appear in diffractive events. In consequence there should be a tiny observable backward peak in the initial baryon distribution even in quite massive diffractive systems.

hep-ph↗