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This book focuses on the topological fermion condensation quantum
phase transition (FCQPT), a phenomenon that reveals the complex
behavior of all strongly correlated Fermi systems, such as heavy
fermion metals, quantum spin liquids, quasicrystals, and
two-dimensional systems, considering these as a new state of
matter. The book combines theoretical evaluations with arguments
based on experimental grounds demonstrating that the entirety of
very different strongly correlated Fermi systems demonstrates a
universal behavior induced by FCQPT. In contrast to the
conventional quantum phase transition, whose physics in the quantum
critical region are dominated by thermal or quantum fluctuations
and characterized by the absence of quasiparticles, the physics of
a Fermi system near FCQPT are controlled by a system of
quasiparticles resembling the Landau quasiparticles. The book
discusses the modification of strongly correlated systems under the
action of FCQPT, representing the "missing" instability, which
paves the way for developing an entirely new approach to condensed
matter theory; and presents this physics as a new method for
studying many-body objects. Based on the authors' own theoretical
investigations, as well as salient theoretical and experimental
studies conducted by others, the book is well suited for both
students and researchers in the field of condensed matter physics.
This book focuses on the topological fermion condensation quantum
phase transition (FCQPT), a phenomenon that reveals the complex
behavior of all strongly correlated Fermi systems, such as heavy
fermion metals, quantum spin liquids, quasicrystals, and
two-dimensional systems, considering these as a new state of
matter. The book combines theoretical evaluations with arguments
based on experimental grounds demonstrating that the entirety of
very different strongly correlated Fermi systems demonstrates a
universal behavior induced by FCQPT. In contrast to the
conventional quantum phase transition, whose physics in the quantum
critical region are dominated by thermal or quantum fluctuations
and characterized by the absence of quasiparticles, the physics of
a Fermi system near FCQPT are controlled by a system of
quasiparticles resembling the Landau quasiparticles. The book
discusses the modification of strongly correlated systems under the
action of FCQPT, representing the "missing" instability, which
paves the way for developing an entirely new approach to condensed
matter theory; and presents this physics as a new method for
studying many-body objects. Based on the authors' own theoretical
investigations, as well as salient theoretical and experimental
studies conducted by others, the book is well suited for both
students and researchers in the field of condensed matter physics.
The aim of this book is to present highly accurate and extensive
theoretical Atomic data and to give a survey of selected
calculational methods for atomic physics, used to obtain these
data. The book presents the results of calculations of cross
sections and probabilities of a broad variety of atomic processes
with participation of photons and electrons, namely on
photoabsorption, electron scattering and accompanying effects.
Included are data for photoabsorption and electron scattering
cross-sections and probabilities of vacancy decay formed for a
large number of atoms and ions. Attention is also given to
photoionization and vacancy decay in endohedrals and to
positron-atom scattering. The book is richly illustrated. The
methods used are one-electron Hartree-Fock and the technique of
Feynman diagrams that permits to include many-electron
correlations. This is done in the frames of the Random Phase
approximation with exchange and the many-body perturbation theory.
Newly obtained and previously collected atomic data are presented.
The atomic data are useful for investigating the electronic
structure and physical processes in solids and liquids, molecules
and clusters, astronomical objects, solar and planet atmospheres
and atomic nucleus. Deep understanding of chemical reactions and
processes is reached by deep and accurate knowledge of atomic
structure and processes with participation of atoms. This book is
useful for theorists performing research in different domains of
contemporary physics, chemistry and biology, technologists working
on production of new materials and for experimentalists performing
research in the field of photon and electron interaction with
atoms, molecules, solid bodies and liquids.
The aim of this book is to present highly accurate and extensive
theoretical Atomic data and to give a survey of selected
calculational methods for atomic physics, used to obtain these
data. The book presents the results of calculations of cross
sections and probabilities of a broad variety of atomic processes
with participation of photons and electrons, namely on
photoabsorption, electron scattering and accompanying effects.
Included are data for photoabsorption and electron scattering
cross-sections and probabilities of vacancy decay formed for a
large number of atoms and ions. Attention is also given to
photoionization and vacancy decay in endohedrals and to
positron-atom scattering. The book is richly illustrated. The
methods used are one-electron Hartree-Fock and the technique of
Feynman diagrams that permits to include many-electron
correlations. This is done in the frames of the Random Phase
approximation with exchange and the many-body perturbation theory.
Newly obtained and previously collected atomic data are presented.
The atomic data are useful for investigating the electronic
structure and physical processes in solids and liquids, molecules
and clusters, astronomical objects, solar and planet atmospheres
and atomic nucleus. Deep understanding of chemical reactions and
processes is reached by deep and accurate knowledge of atomic
structure and processes with participation of atoms. This book is
useful for theorists performing research in different domains of
contemporary physics, chemistry and biology, technologists working
on production of new materials and for experimentalists performing
research in the field of photon and electron interaction with
atoms, molecules, solid bodies and liquids.
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