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Effect of Disorder on the Emission Spectra of Er<sup>3+</sup>, Tm<sup>3+</sup>, and Yb<sup>3+</sup>-Doped β‑NaYF<sub>4</sub>: Quantum Chemical and Experimental Results. [PDF]
J Phys Chem C Nanomater InterfacesConrad CS, Behnle S, Hemmer E, Fink RF.
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Challenges and strategies for first-principles simulations of two-dimensional magnetic phenomena.
NanoscaleGarrido Aldea J +3 more
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Gapless fracton quantum spin liquid and emergent photons in a 2D spin-1 model
Niggemann N +3 more
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Physical Review, 1950
It is usually contended that the quantum theory of fields is intrinsically divergent. The present paper attempts to show that this divergence is due to the perturbation theory generally employed and not to the field theory itself. By means of a minor modification in the perturbation calculations, the divergent integrals may be given appropriate finite ...
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It is usually contended that the quantum theory of fields is intrinsically divergent. The present paper attempts to show that this divergence is due to the perturbation theory generally employed and not to the field theory itself. By means of a minor modification in the perturbation calculations, the divergent integrals may be given appropriate finite ...
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Postulates of Quantum Field Theory
Journal of Mathematical Physics, 1962We give a survey of the postulates which provide the framework of quantum field theory. Particular attention is given to the lesser known ones, namely, completeness requirements and ``primitive causality.'' Three field theoretical models are analyzed. These examples show that ``primitive causality'' is not a consequence of the commonly used postulates (
Haag, Rudolf, Schroer, B.
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Relativistic quantum field theory
Physics Today, 1966THE RELATIVISTIC QUANTUM theory of fields was born some 35 years ago through the paternal efforts of Dirac, Heisenberg, Pauli and others. It was a somewhat retarded youngster, however, and first reached adolescence 17 years later, an event which we are gathered here to celebrate. But it is the subsequent development and more mature phase of the subject
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