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[null,"1.","Record Nr.",null,"UNINA9910790867603321"]
[null,null,"Autore",null,"Olshanii M (Maxim)"]
[null,null,"Titolo",null,"Back-of-the-envelope quantum mechanics : with extensions to many-body systems and integrable PDEs / / Maxim Olshanii, University of Massachusetts, Boston, USA"]
[null,null,"Pubbl/distr/stampa",null,"New Jersey : , : World Scientific, , [2014]"]
[{"$nulls":4},"�2014"]
[null,null,"ISBN",null,"981-4508-47-0"]
[null,null,"Descrizione fisica",null,"1 online resource (xvii, 151 pages) : illustrations"]
[null,null,"Collana",null,"Gale eBooks"]
[null,null,"Disciplina",null,"530.12015118"]
[null,null,"Soggetti",null,"Quantum theory"]
[{"$nulls":4},"Many-body problem"]
[{"$nulls":4},"Differential equations, Partial"]
[null,null,"Lingua di pubblicazione",null,"Inglese"]
[null,null,"Formato",null,"Materiale a stampa"]
[null,null,null,"Livello bibliografico","Monografia"]
[null,null,null,"Note generali","Includes index."]
[null,null,null,"Nota di bibliografia","Includes bibliographical references and indexes."]
[null,null,"Nota di contenuto",null,"Preface; Contents; 1. Ground State Energy of a Hybrid Harmonic-Quartic Oscillator: A Case Study; 1.1 Solved problems; 1.1.1 Dimensional analysis and why it fails in this case; 1.1.1.1 Side comment: dimensional analysis and approximations; 1.1.1.2 Side comment: how to recast input equations in a dimensionless form; 1.1.2 Dimensional analysis: the harmonic oscillator alone; 1.1.3 Order-of-magnitude estimate: full solution; 1.1.3.1 Order-of-magnitude estimates vis-a-vis dimensional analysis; 1.1.3.2 Harmonic vs. quartic regimes; 1.1.3.3 The harmonic oscillator alone"]
[{"$nulls":4},"1.1.3.4 The quartic oscillator alone1.1.3.5 The boundary between the regimes and the final result; 1.1.4 An afterthought: boundary between regimes from dimensional considerations; 1.1.5 A Gaussian variational solution; 2. Bohr-Sommerfeld Quantization; 2.1 Solved problems; 2.1.1 A semi-classical analysis of the spectrum of a harmonic oscillator: the exact solution, an order-of-magnitude estimate, and dimensional analysis; 2.1.2 WKB treatment of a \"straightened\" harmonic oscillator; 2.1.3 Ground state energy in power-law potentials; 2.1.4 Spectrum of power-law potentials"]
[{"$nulls":4},"2.1.5 The number of bound states of a diatomic molecule2.1.6 Coulomb problem at zero angular momentum; 2.1.7 Quantization of angular momentum from WKB; 2.1.8 From WKB quantization of 4D angular momentum to quantization of the Coulomb problem; 2.2 "]
[{"$nulls":4},"Problems without provided solutions; 2.2.1 Size of a neutral meson in Schwinger's toy model of quark confinement; 2.2.2 Bohr-Sommerfeld quantization for periodic boundary conditions; 2.2.3 Ground state energy of multi-dimensional powerlaw potentials; 2.2.4 Ground state energy of a logarithmic potential; 2.2.5 Spectrum of a logarithmic potential"]
[{"$nulls":4},"2.2.6 1D box as a limit of power-law potentials2.2.7 Spin-1/2 in the field of a wire; 2.2.8 Dimensional analysis of the time-dependent Schro-dinger equation for a hybrid harmonicquartic oscillator; 2.3 Background; 2.3.1 Bohr-Sommerfeld quantization; 2.3.2 Multi-dimensional WKB; 2.4 Problems linked to the \"Background\"; 2.4.1 Bohr-Sommerfeld quantization for one soft turning point and a hard wall; 2.4.2 Bohr-Sommerfeld quantization for two hard walls; 3. \"Halved\" Harmonic Oscillator: A Case Study; Introduction; 3.1 Solved Problems; 3.1.1 Dimensional analysis; 3.1.2 Order-of-magnitude estimate"]
[{"$nulls":4},"3.1.3 Another order-of-magnitude estimate3.1.4 Straightforward WKB; 3.1.5 Exact solution; 4. Semi-Classical Matrix Elements of Observables and Perturbation Theory; 4.1 Solved problems; 4.1.1 Quantum expectation value of x6 in a harmonic oscillator; 4.1.2 Expectation value of r2 for a circular Coulomb orbit; 4.1.3 WKB approximation for some integrals involving spherical harmonics; 4.1.4 Ground state wave function of a one dimensional box; 4.1.5 Eigenstates of the harmonic oscillator at the origin: how a factor of two can restore a quantum-classical correspondence"]
[{"$nulls":4},"4.1.6 Probability density distribution in a \"straightened\" harmonic oscillator"]
[null,null,null,"Sommario/riassunto","Dimensional and order-of-magnitude estimates are practiced by almost everybody but taught almost nowhere. When physics students engage in their first theoretical research project, they soon learn that exactly solvable problems belong only to textbooks, that numerical models are long and resource consuming, and that \"\"something else\"\" is needed to quickly gain insight into the system they are going to study. Qualitative methods are this \"\"something else\"\", but typically, students have never heard of them before. The aim of this book is to teach the craft of qualitative analysis using a set of p"]
[null,"2.","Record Nr.",null,"UNINA9910140149403321"]
[null,null,"Autore",null,"Djalili Mohammad Reza"]
[null,null,"Titolo",null,"Géopolitique de la nouvelle Asie centrale : de la fin de l'URSS à l'après-11 septembre"]
[null,null,"Pubbl/distr/stampa",null,"Graduate Institute Publications, 2006"]
[{"$nulls":4},"[Place of publication not identified], : Graduate Institute Publications, 2006"]
[null,null,"ISBN",null,"2-940549-16-8"]
[null,null,"Edizione",null,"[Nouvelle édition.]"]
[null,null,"Descrizione fisica",null,"1 online resource (588 pages)"]
[null,null,"Collana",null,"International"]
[null,null,"Disciplina",null,"320.958/09/049"]
[null,null,"Soggetti",null,"Regions & Countries - Europe"]
[{"$nulls":4},"History & Archaeology"]
[{"$nulls":4},"Russia & Former Soviet Republics"]
[{"$nulls":4},"Asia, Central Politics and government 1991-"]
[{"$nulls":4},"Asia, Central Foreign relations"]
[null,null,"Lingua di pubblicazione",null,"Francese"]
[null,null,"Formato",null,"Materiale a stampa"]
[null,null,null,"Livello bibliografico","Monografia"]
[null,null,null,"Note generali","Bibliographic Level Mode of Issuance: Monograph"]
[null,null,null,"Nota di bibliografia","Includes bibliographical references and index."]
[null,null,null,"Sommario/riassunto","Avec l'effondrement de l'Union soviétique et l'accession à l'indépendance des cinq républiques situées dans la région, l'Asie centrale a réintégré la scène internationale en tant que catégorie spatiale autonome. Le retour de ce que Mackinder avait naguère baptisé « le pivot géographique de l'histoire » constitue sans doute un des événements majeurs de la vie internationale de la dernière décennie du vingtième siècle.  Ce fait a entraîné une transformation géopolitique dont l'importance dépasse largement les limites territoriales des ex-républiques soviétiques. Que ce soit par rapport au Moyen-Orient, au continent asiatique, à l'Eurasie et bien entendu à la Russie elle-même, de nouvelles dynamiques sont apparues dont les conséquences deviendront de plus en plus perceptibles à mesure qu'on avancera dans le nouveau siècle. La première édition de Géopolitique de la nouvelle Asie centrale est parue en mars 2001. Quelques mois plus tard, alors qu'une deuxième édition était sous presse, les attentats du 11 septembre ont eu lieu à New York et Washington.  L'intervention américaine en Afghanistan et la chute du régime des talibans ont profondément modifié la donne géopolitique en Asie centrale. En quelques semaines, cette région, qui jusqu'alors suscitait surtout la "]
[{"$nulls":4},"convoitise pour ses ressources en hydrocarbures, est devenue le premier front de la lutte antiterroriste lancée par les États-Unis. Les auteurs de cet ouvrage ne pouvaient évidemment faire l'impasse sur ces bouleversements."]