The Rise of Quantum MechanicsThe rise of quantum mechanics is reviewed with special attention to the development between June 1925 and October 1927 when the Copenhagen interpretation was proposed.Sigfrido Boffi·Jun 27, 2008SaveLearn
The cosmology of the Divine ComedySince the time of ancient civilizations, cosmology had a privileged place within the various artistic and literary manifestations. The Divine Comedy by Dante Alighieri, one of the masterpieces in…Alejandro Gangui·Jun 25, 2008SaveLearn
Landau singularity and the instability of vacuum state in QEDQuantum Eletrodynamics (QED) is considered as the most successful of all physical theories. It can predict numerical values of physical quantities to a spectacular degree of accuracy. However, from…Mofazzal Azam·Jun 13, 2008SaveLearn
Landau's Last Paper and its Impact on Developments in Mathematics, Physics and Other Disciplines in New MillenniumIn this paper we discuss the impact of the last Landau paper on physics and mathematics to date and make some predictions about its likely impact on sciences in new millennium.Arkady L. Kholodenko·Jun 6, 2008SaveLearn
A note on space dimensionality constraints relied on Anthropic arguments: methane structure and the origin of lifeA general sketch of how the problem of space dimensionality depends on Anthropic arguments is presented. A new argument in favor of a stable scenario for space dimensionality for a time scale longer…Francisco Caruso·Jun 4, 2008SaveLearn
Bohr's atomic model revisitedBohr's atomic model, its relationship to the radiation spectrum of the hydrogen atom and the inherent hypotheses are revisited. It is argued that Bohr could have adopted a different approach,…Francisco Caruso, Vitor Oguri·Jun 3, 2008SaveLearn
Complex and Unpredictable CardanoThis purely recreational paper is about one of the most colorful characters of the Italian Renaissance, Girolamo Cardano, and the discovery of two basic ingredients of quantum theory, probability and…Artur Ekert·Jun 3, 2008SaveLearn
The Origin of Semiconductor Physics in Italy: 1945 - 1965The activities carried out by Italian physicists in the field of semiconductor physics during the period spanning from 1945 to the foundation of the National Group of Structure of the Matter (GNSM,…Marco Luca Rossi·May 25, 2008SaveLearn
A theory of ferromagnetism by Ettore MajoranaWe present and analyze in detail an unknown theory of ferromagnetism developed by Ettore Majorana as early as the beginnings of 1930s, substantially different in the methods employed from the…S. Esposito·May 20, 2008SaveLearn
Quantum Gravity Yesterday and TodayWe present a talk given by Bryce DeWitt on Quantum Gravity, and present many references. This article is the first installment of the book "The Pursuit of Quantum Gravity 1946-2004; Memoirs of…Bryce DeWitt·May 19, 2008SaveLearn
Scientific Realism and Classical PhysicsWe recount the successful long career of classical physics, from Newton to Einstein, which was based on the philosophy of scientific realism. Special emphasis is given to the changing status and…Virendra Singh·May 13, 2008SaveLearn
Einstein's E = mc2 mistakesAlthough Einstein's name is closely linked with the celebrated relation E = mc2 between mass and energy, a critical examination of the more than half dozen "proofs" of this relation that…Hans C. Ohanian·May 9, 2008SaveLearn
The color charge degree of freedom in particle physicsWe review the color charge degree of freedom in particle physics.O. W. Greenberg·May 2, 2008SaveLearn
Fermi at Los Alamos and the early Britain's way to nuclear energyA novel recovery of some important documents related to the Fermi course on neutron physics, held at Los Alamos in 1945, is announced. Its relevance for the effective launch of a British nuclear…S. Esposito·May 2, 2008SaveLearn
Accelerator Disaster Scenarios, the Unabomber, and Scientific RisksThe possibility that experiments at high-energy accelerators could create new forms of matter that would ultimately destroy the Earth has been considered several times in the past quarter century.…Joseph I. Kapusta·Apr 30, 2008SaveLearn
Principles of the motion of fluidsThis is an English translation of Euler's article "Principia motus fluidorum" in which the Euler equation (in two three dimensions) has been established for the first time in 1752. The…Leonhard Euler·Apr 30, 2008SaveLearn
Quantum Mechanics, is it magic?We show that quantum mechanics is the first theory in human history that violates the basic a priori principles that have shaped human thought since immemorial times. Therefore although it is more…M. Ferrero, D. Salgado, J. L. Sanchez-Gomez·Apr 26, 2008SaveLearn
The relativity of inertia and reality of nothingWe first see that the inertia of Newtonian mechanics is absolute and troublesome. General relativity can be viewed as Einstein's attempt to remedy, by making inertia relative, to matter---perhaps…Alexander Afriat, Ermenegildo Caccese·Apr 19, 2008SaveLearn
How Weyl stumbled across electricity while pursuing mathematical justiceIt is argued that Weyl's theory of gravitation and electricity came out of `mathematical justice': out of the equal rights direction and length. Such mathematical justice was manifestly at…Alexander Afriat·Apr 18, 2008SaveLearn
History of the Kohlrausch (stretched exponential) function: Focus on uncited pioneering work in luminescenceThe first use of the stretched exponential function to describe the time evolution of a non-equilibrium quantity is usually credited to Rudolph Kohlrausch (1809-1858), who in 1854 applied it to the…M. Berberan-Santos, E. N. Bodunov, B. Valeur·Apr 10, 2008SaveLearn
Ettore Majorana and his heritage seventy years laterThe physicists working in several areas of research know quite well the name of Ettore Majorana, since it is currently associated to fundamental concepts like Majorana neutrinos in particle…S. Esposito·Mar 25, 2008SaveLearn
Asymptotic freedom: history and interpretationIn this lecture, the early history of asymptotic freedom is discussed. The first completely correct derivation of β0 in non-abelian gauge theory (Khriplovich, 1969) was done in the Coulomb gauge;…Andrey Grozin·Mar 18, 2008SaveLearn
Some insights from total collapseWe discuss the Sundman-Weierstrass theorem of total collapse in its historical context. This remarkable and relatively simple result, a type of stability criterion, is at the crossroads of some…Sergio B. Volchan·Mar 14, 2008SaveLearn
E.C.G. Stueckelberg: a forerunner of modern physics IIWe will investigate some aspects of Stueckelberg's work, which have contributed to the development of modern physics. On the one hand, the definition of diffuse boundaries in the calculation of…F. Cianfrani, O. M. Lecian·Mar 11, 2008SaveLearn
Freedom in NatureThe paper starts with the proposal that the cause of the apparent insolubility of the free-will problem are several popular but strongly metaphysical notions and hypotheses. To reduce the…Petr Hajicek·Mar 10, 2008SaveLearn