LA MECÁNICA ONDULATORIA LLEGA A ESPAÑA: SCHRÖDINGER EN LA UNIVERSIDAD INTERNACIONAL DE SANTANDER, AGOSTO DE 1934

2020 ◽  
pp. 201-226
Author(s):  
Enric Pérez ◽  
Gonzalo Gimeno ◽  
Mercedes Xipell ◽  
Marià Baig
Keyword(s):  
Quantum Mechanics ◽  
Academic Life ◽  
Interpretation Of Quantum Mechanics ◽  
Wave Mechanics ◽  
Santiago De Compostela ◽  
Erwin Schrödinger ◽  
International University ◽  
The Impact ◽  
Siglo Xx ◽  
Made In

Resumen Describimos y analizamos los detalles de la primera visita del físico vienés Erwin Schrödinger a España, en verano de 1934. El motivo del viaje fue la invitación de la Universidad Internacional de Santander, cita a la que acudió después de intervenir en el XIV Congreso de la Asociación Española para el Progreso de las Ciencias que se celebró ese mismo verano en Santiago de Compostela. Discutiremos el impacto de esta visita en los primeros desarrollos de la mecánica cuántica en España y veremos el papel que tuvieron en este episodio personajes como Xavier Zubiri o Blas Cabrera. También pondremos esta visita en el contexto de la evolución personal y académica de Schrödinger, especialmente en lo que se refiere al contenido de sus intervenciones. Veremos que lo que presentó en Santiago y Santander debe considerarse un anticipo de su crítica a la interpretación ortodoxa de la nueva mecánica de los cuantos. Dejamos para una segunda entrega el viaje que realizó en la primavera de 1935, menos de un año después, esta vez junto a su esposa Annie, y en la que pronunció diversas conferencias y cursos sobre mecánica ondulatoria en Madrid. Abstract We describe and analyze the details of the first visit of the Viennese physicist Erwin Schrödinger to Spain, in the summer of 1934. The reason for the trip was the invitation he received from the International University of Santander, a meeting he attended after participating in the XIV Conference of the Spanish Association for the Advancement of Science that took place that same summer in Santiago de Compostela. We will discuss the impact of this visit on the first developments of quantum mechanics in Spain and see the role that personalities such as Xavier Zubiri or Blas Cabrera played in this episode. We will also put this visit in the context of Schrödinger’s personal and academic life, especially as regards the content of his talks. We will see that what he presented in Santiago and Santander should be considered as an advance of his criticism of the orthodox interpretation of quantum mechanics. We leave for a second installment the trip he made in the spring of 1935, less than a year later, this time with his wife Annie, and in which he delivered various conferences and courses on wave mechanics in Madrid. Palabras claves: Física, Mecánica cuántica, España, siglo XX. Key words: Physics, Quantum mechanics, Spain, XXth century.

scholarly journals Is Schrödinger's Cat Alive?

Quanta ◽  
2017 ◽  
Vol 6 (1) ◽  
pp. 70 ◽  
Author(s):  
Mani L. Bhaumik
Keyword(s):  
Quantum Mechanics ◽  
Wave Equation ◽  
Equation Of Motion ◽  
Copenhagen Interpretation ◽  
Interpretation Of Quantum Mechanics ◽  
Erwin Schrödinger ◽  
Quantum Reality

Erwin Schrödinger is famous for presenting his wave equation of motion that jump-started quantum mechanics. His disenchantment with the Copenhagen interpretation of quantum mechanics led him to unveil the Schrödinger's cat paradox, which did not get much attention for nearly half a century. In the meantime, disappointment with quantum mechanics turned his interest to biology facilitating, albeit in a peripheral way, the revelation of the structure of DNA. Interest in Schrödinger's cat has recently come roaring back making its appearance conspicuously in numerous scientific articles. From the arguments presented here, it would appear that the legendary Schrödinger's cat is here to stay, symbolizing a profound truth that quantum reality exists at all scales; but we do not observe it in our daily macroscopic world as it is masked for all practical purposes, most likely by environmental decoherence with irreversible thermal effects.Quanta 2017; 6: 70–80.

scholarly journals Erwin Schrödinger and Quantum Wave Mechanics

Quanta ◽  
2017 ◽  
Vol 6 (1) ◽  
pp. 48 ◽  
Author(s):  
John J. O'Connor ◽  
Edmund F. Robertson
Keyword(s):  
Quantum Mechanics ◽  
Wave Equation ◽  
Quantum Probability ◽  
Wave Mechanics ◽  
Space And Time ◽  
Erwin Schrödinger ◽  
Quantum Particles ◽  
Quantum Wave ◽  
The Veil ◽  
Matrix Quantum

<p>The fathers of matrix quantum mechanics believed that the quantum particles are <em>unanschaulich</em> (unvisualizable) and that quantum particles pop into existence only when we measure them. Challenging the orthodoxy, in 1926 Erwin Schrödinger developed his wave equation that describes the quantum particles as a packet of quantum probability amplitudes evolving in space and time. Thus, Schrödinger visualized the unvisualizable and lifted the veil that has been obscuring the wonders of the quantum world.</p><p>Quanta 2017; 6: 48–52.</p>

On the Probabilistic Nature of Observable Phenomena

2019 ◽  
Author(s):  
Muhammad Ali
Keyword(s):  
Quantum Mechanics ◽  
Complete Theory ◽  
Interpretation Of Quantum Mechanics ◽  
Multiple Realities ◽  
Lack Of Information ◽  
Complete Theories ◽  
Probabilistic Nature

This paper proposes a Gadenkan experiment named “Observer’s Dilemma”, to investigate the probabilistic nature of observable phenomena. It has been reasoned that probabilistic nature in, otherwise uniquely deterministic phenomena can be introduced due to lack of information of underlying governing laws. Through theoretical consequences of the experiment, concepts of ‘Absolute Complete’ and ‘Observably Complete” theories have been introduced. Furthermore, nature of reality being ‘absolute’ and ‘observable’ have been discussed along with the possibility of multiple realities being true for observer. In addition, certain aspects of quantum mechanics have been interpreted. It has been argued that quantum mechanics is an ‘observably complete’ theory and its nature is to give probabilistic predictions. Lastly, it has been argued that “Everettian - Many world” interpretation of quantum mechanics is very real and true in the framework of ‘observable nature of reality’, for humans.

Constructing Quantum Mechanics

2019 ◽  
Author(s):  
Anthony Duncan ◽  
Michel Janssen
Keyword(s):  
Quantum Mechanics ◽  
Quantum Theory ◽  
Stark Effect ◽  
Zeeman Effect ◽  
Black Body ◽  
Black Body Radiation ◽  
Wave Mechanics ◽  
Specific Heats ◽  
Old Quantum Theory ◽  
Upper Level

This is the first of two volumes on the genesis of quantum mechanics. It covers the key developments in the period 1900–1923 that provided the scaffold on which the arch of modern quantum mechanics was built in the period 1923–1927 (covered in the second volume). After tracing the early contributions by Planck, Einstein, and Bohr to the theories of black‐body radiation, specific heats, and spectroscopy, all showing the need for drastic changes to the physics of their day, the book tackles the efforts by Sommerfeld and others to provide a new theory, now known as the old quantum theory. After some striking initial successes (explaining the fine structure of hydrogen, X‐ray spectra, and the Stark effect), the old quantum theory ran into serious difficulties (failing to provide consistent models for helium and the Zeeman effect) and eventually gave way to matrix and wave mechanics. Constructing Quantum Mechanics is based on the best and latest scholarship in the field, to which the authors have made significant contributions themselves. It breaks new ground, especially in its treatment of the work of Sommerfeld and his associates, but also offers new perspectives on classic papers by Planck, Einstein, and Bohr. Throughout the book, the authors provide detailed reconstructions (at the level of an upper‐level undergraduate physics course) of the cental arguments and derivations of the physicists involved. All in all, Constructing Quantum Mechanics promises to take the place of older books as the standard source on the genesis of quantum mechanics.

Handshake antimicrobial stewardship as a model to recognize and prevent diagnostic errors

Diagnosis ◽  
2020 ◽  
Vol 0 (0) ◽  
Author(s):  
Justin B. Searns ◽  
Manon C. Williams ◽  
Christine E. MacBrayne ◽  
Ann L. Wirtz ◽  
Jan E. Leonard ◽  
...  
Keyword(s):  
Antimicrobial Stewardship ◽  
Interrater Reliability ◽  
Diagnostic Errors ◽  
Diagnostic Error ◽  
Primary Treatment ◽  
Treatment Team ◽  
Children's Hospital ◽  
Children’S Hospital ◽  
The Impact ◽  
Made In

AbstractObjectivesFew studies describe the impact of antimicrobial stewardship programs (ASPs) on recognizing and preventing diagnostic errors. Handshake stewardship (HS-ASP) is a novel ASP model that prospectively reviews hospital-wide antimicrobial usage with recommendations made in person to treatment teams. The purpose of this study was to determine if HS-ASP could identify and intervene on potential diagnostic errors for children hospitalized at a quaternary care children’s hospital.MethodsPreviously self-identified “Great Catch” (GC) interventions by the Children’s Hospital Colorado HS-ASP team from 10/2014 through 5/2018 were retrospectively reviewed. Each GC was categorized based on the types of recommendations from HS-ASP, including if any diagnostic recommendations were made to the treatment team. Each GC was independently scored using the “Safer Dx Instrument” to determine presence of diagnostic error based on a previously determined cut-off score of ≤1.50. Interrater reliability for the instrument was measured using a randomized subset of one third of GCs.ResultsDuring the study period, there were 162 GC interventions. Of these, 65 (40%) included diagnostic recommendations by HS-ASP and 19 (12%) had a Safer Dx Score of ≤1.50, (Κ=0.44; moderate agreement). Of those GCs associated with diagnostic errors, the HS-ASP team made a diagnostic recommendation to the primary treatment team 95% of the time.ConclusionsHandshake stewardship has the potential to identify and intervene on diagnostic errors for hospitalized children.

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