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Article
Design characteristics and optimization of the reactivity modulator in the IBR-2 reactor
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Article
Spectral representation of the two-point functions for fields describing composite particles
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Article
Quantization of an essentially nonlinear field
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Article
On localization of relativistic microparticles in space and time
The present day theory in a formal way permits one particle states which are localized in space with any degree of accuracy. This gives the possibility to formulate conditions of macroscopic causality directly...
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Article
Conditions of macroscopic causality for the scattering matrix
The condition of macroscopic causality for the scattering matrix is formulated. An example of the unitary but nonlocal scattering matrix which satisfies the requirements of macroscopic causality is given.
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Article
In memoriam: Homi Jehangir Bhabha
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Article
A decade of scientific work at the Joint Institute for Nuclear Research
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Article
Backward scattering of high-energy particles
On the basis of the optical model, under very general assumptions, it is shown that in the backward scattering there must be a peak of width ∼
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Article
Acausality and dispersion relations
This paper is concerned with the study of the analytic properties of the scattering amplitude under the assumption that the signal propagates not only inside the light cone but also outside it, however near it...
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Book
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Chapter
The Many-Body Problem
The quantum mechanics of a single particle in an external field can be generalised to the motion of several particles. To do so it is sufficient, as in classical mechanics, to consider a system of N particles as ...
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Chapter
Systems of Identical Microparticles
Let us now go on to consider systems consisting of identical particles, by which we mean particles having the same mass m, charge e, spin s etc., so that they behave in the same manner under the same conditions (...
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Chapter
Magnetic Phenomena
A simple and fundamental problem of atomic mechanics in the field of magnetic phenomena is to calculate the magnetic moments of atoms placed in an external magnetic field. We have already given in Section 53 a...
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Chapter
Change of Mechanical Quantities with Time
Schrödinger’s equation allows the establishment of simple rules whereby the change of the mean value of any mechanical quantity in an infinitesimal interval of time may be calculated; that is, the time derivat...
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Chapter
Basic Theory of Representations
We have seen that a characteristic feature of quantum mechanics is that the simultaneous use of various classical corpuscular quantities (p x and x, T and U, M x ...
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Chapter
Motion of a Charged Microparticle in an Electromagnetic Field
Let us now consider the motion of particles with charge e and mass μ in an arbitrary electromagnetic field. Let the electric field strength be ℰ, and the magnetic field strength be ℋ. These can be expressed in te...
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Chapter
Simple Applications of Perturbation Theory
A harmonic oscillator is an idealisation of actual mechanical systems. The real potential energy of particles is never represented by the function ½μω o 2 x2 but by a much ...
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Chapter
Theory of Quantum Transitions
One of the most important problems of quantum mechanics is to calculate the probabilities of transitions from one quantum state to another. This problem may be formulated as follows. Suppose that at time t = 0 we...
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Chapter
Second Quantisation and Quantum Statistics
Assemblies of identical particles may be treated by a special method known as second quantisation. The essence of this method is that the independent variables that describe the assembly are taken to be not the s...
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Chapter
The Atomic Nucleus
The interaction of the nucleons in a nucleus is a problem which is as yet far from being solved. The principles of quantum mechanics can, however, be applied both to the motion of the nucleons in the nucleus a...
