Day 3 :
- Track 9 : Geophysics
Track 10 : Quantum Physics
Track 12 : Physics in Different Sciences
Track 14 : Chemical Physics
Location: Salon 3
Eugene Stephane Mananga
The City University of New York, USA
Alejandro Martin Sanchez
University of Extremadura, Spain
Federal University of Rio de Janeiro, Brazil
Title: Generalization of framework of analytic mechanics and unified description of quantum and classical physics
Time : 10:00 -10:25
Tomoi Koide is a Professor at Institute of Physics, Federal University of Rio de Janeiro, Brazil. He has completed his PhD from Tohoku University, Japan and Post-doctoral studies from Frankfurt University, Federal University of Rio de Janeiro and so on. He has published more than 60 papers in reputed journals.
Variational principle plays a fundamental role in elucidating the structure of classical mechanics, clarifying the origin of dynamics and the relation between symmetries and conservation laws. In classical mechanics, the optimized function is characterized by Lagrangian, defined as T-V with T and V being a kinetic and a potential terms, respectively. We can still argue a variational principle even in quantum mechanics, but the Lagrangian does not have the form of T-V any more. Therefore, at first glance, any clear or direct correspondence between classical and quantum mechanics does not seem to exist from the variational point of view, but it does exist. For this, we need to extend the usual variational method to the case of stochastic variables. This is called stochastic variational method (SVM). The Schrödinger equation can be then obtained by the stochastic optimization of the action which leads to, meanwhile, the Newton equation in the application of the classical variation. From this point of view, quantization can be regarded as a process of stochastic optimization and the invariance of the action leads to the conservation laws in quantum mechanics. In this manner, classical and quantum behaviors are described in a unified way under SVM. Although SVM was originally proposed as the reformulation of Nelson's stochastic quantization, its applicability is not restricted to quantization. In fact, dissipative dynamics such as the Navier-Stokes-Fourier (viscous fluid) equation can be obtained by applying SVM to the Lagrangian which leads to the Euler (ideal fluid) equation in the classical variational method. This method is useful even to obtain coarse-grained dynamics. For example, the Gross-Pitaevskii equation is regarded as an optimized dynamics in SVM. Therefore it is possible to consider that the study of SVM enables us to generalize the framework of analytic mechanics.
University of Extremadura, Spain
Time : 10:25-10:50
Alejandro Martín Sánchez works at the University of Extremadura (Spain). He completed his studies at the Autonomous University of Madrid (Spain). He was the Head of the Physics Department for 12 years. He has published more than 100 papers in the most reputed journals about Environmental Radioactivity and Nuclear Physics.
Remedial actions are necessary in environments with high radon concentrations. A first survey about measurements of indoor radon concentration in working places was performed in Extremadura (Spain). Sites studied included resorts, spas, caves, tunnels, mines, facilities storing or dealing with water, and other underground and surface suspected work places (warehouses, parking lots, hotels, museums, educational centres, etc.). Results showed that about 85% of more than 300 working places measured, were below an annual average concentration of 200 Bq/m3, 9% were between 200 and 400 Bq/m3, and 6% were above 400 Bq/m3. A second study was undertaken, performing surveillance and applying mitigation methods when necessary. Four surveys were performed to fulfil one year study. Remedial or mitigation actions (ventilation, changing the working place inside the same building, limiting the time of residence of people, or architectonics actuations) were applied. A total of 240 measurements were performed in 35 sites. At this time, following the actual Spanish legislation, the working places were classified as 191 results (in 26 sites) with average indoor radon concentration lower than 600 Bq/m3, 38 results (in 6 sites) between 600 and 1000 Bq/m3, and 11 results (in 3 sites) with concentrations above 1000 Bq/m3. In some special cases, a continuous monitoring device was used to study the hourly variation of the indoor radon concentration. Results showed then a very great variability. Concentration variations in the working day and journey should be considered in this case because otherwise the dose received by workers could be erroneously estimated.
USDA-Agricultural Research Service, USA
Time : 10:50-11:15
Galina Yakubova has experience in the field of Applied Nuclear Physics during 20 years. She has completed her PhD in 2009 year from University of Illinois at Urbana-Champaign, and Post-doctoral studies from Brookhaven National Laboratory. She is a Soil Nuclear Scientist at NSDL and works at application of nuclear physics methods for soil elemental analysis. She published 4 papers on present topic in reputed journals, and had 3 presentations on National and Regional conferences.
Soil science is a research field where physical concepts and experimental methods are widely used, particularly in agro-chemistry and soil elemental analysis. Different methods of analysis are currently available. The evolution of nuclear physics (methodology and instrumentation) combined with the availability of commercial products (portable pulse neutron generators, high efficiency gamma detectors, reliable electronics, and measurement processing software) and the current understanding of neutron interactions with nuclei, has recently made it possible for neutron-gamma analyses of soil elemental content for routine field measurements (cropland, forest, desert etc.) as well as in the laboratory. Neutron-gamma analyses are based on the registration of gamma lines which appear due to neutron-nuclei interactions. These methods have great advantage over traditional chemical (dry combustion) and physical-chemical methods which are labor extensive and time consuming. Neutron-gamma analyses are non-destructive multi-elemental analyses of large soil volumes that require no sample preparation, and are conducted in situ. We will discuss physical principals, apparatus design, and application of an advanced of neutron-gamma approach [i.e., Pulsed Fast/Thermal Neutron Method (PFTNA)] for soil elemental analysis. Using examples of this method for soil carbon, nitrogen, and chlorine determination, we will demonstrate the main features and possible use of PFTNA for the analyses of nuclei having characteristic gamma lines issued due to inelastic neutron scattering and for nuclei having characteristic gamma lines issued due to thermal neutron capture.
The City University of New York, USA
Title: On Fer and Floquet-Magnus expansions: Application in solid-state nuclear magnetic resonance and physics
Time : 11:35-12:00
Eugene Stephane Mananga is a Faculty Member in the Physics Doctorate Program at the Graduate Center of the City University of New York, an Assistant Professor of Physics and Nuclear Medicine at BCC of CUNY, and an Adjunct Professor of Applied Physics at New York University. He completed his PH.D in Physics from the Graduate Center of the City University of New York, and holds 6 additional graduate degrees and training from various institutions including Harvard Medical School, Massachusetts General Hospital, and City College of New York. Eugene did his postdoctoral studies in the National High Magnetic Field Laboratory of USA, Harvard Medical School, and Massachusetts General Hospital. He was an “Ingenieur de Recherche” in the French Atomic Energy Commission and Alternative Energies (CEA-SACLAY-NEUROSPIN). Eugene has published more than 30 articles mainly as first author in major peer-review journals and has been serving as an editorial board member of several journals.
We present two alternative expansion scheme called Floquet-Magnus expansion used to solve a time-dependent linear differential equation which is a central problem in quantum physics in general and solid-state nuclear magnetic resonance (NMR) in particular. The commonly used methods to treat theoretical problems in solid-state NMR are the average Hamiltonian theory and the Floquet theory, which have been successful for designing sophisticated pulse sequences and understanding of different experiments. The topic of the talk opens a way to an infinite number of suggestions. However, it is very important to remember that the Fer and Floquet-Magnus expansions method have recently found new major areas of applications such as topological materials. Researchers, dealing with those new applications, are not usually acquainted with the achievements of the magnetic resonance theory, where those methods were developed more than 30 years ago. They repeat the same mistakes that were made when the methods of spin dynamics and thermodynamics were developed in the past. This talk is very useful not only for the NMR and physics communities but for the new communities in several younger fields. It will be very useful for scientists working in different directions. In this talk, I will compare both approaches (Fer and Floquet-Magnus expansions) and present their use for the calculation of effective Hamiltonians and propagators, the performance of explicit calculation for the Bloch-Siegert shift, heteronuclear dipolar decoupling, cross-polarization, and rotary-resonance recoupling. This presentation contributes theoretically and numerically in the general field of spin dynamics and physics.
Indian Institute of Technology(Banaras Hindu University), India
Time : 12:00-12:25
Manish Kumar has obtained BE (Electrical Engineering) from MNNIT, Allahabad, MTech (Energy Studies) and PhD (Plasma Physics) from IIT Delhi. He has rich experience of more than twelve years in teaching, research and training. His areas of interest in teaching and research are Hybrid energy system, Optical fibers, Terahertz radiation generation, Photonics, Surface plasma waves and Plasma physics. He has published more than 8 papers in reputed journals and has been serving as an Editorial Advisory Board Member of repute. He has travelled widely across the globe (Canada, China and Japan, etc.) under various international conferences. He has brought under the F.A.S.T. scheme of MHRD, a Center for Energy and Resources Development (CERD) for IIT (BHU). Presently he is working on the project “1.5 MW Integrated Dairy and Smart Hybrid Energy System” with vision of empowering the villages of India to be self-dependent and have a modern outlook. He has also setup a prototype lab for this project in the Department of Electrical Engineering, IIT (BHU). Prior to this assignment, he has worked with Modipon Fibers Company Limited & Bharat Sanchar Nigam Limited and has contributed in successful launching of Mobile network of BSNL. Presently, he is working as an Assistant Professor in Department of Electrical Engineering, IIT (BHU).
GOD’s physical existence and his interaction with the matter (living/non-living) is beyond the realm of physics as the boundary of physics is . Understanding the natural philosophy till now is being the consequence of having undettered faith in GOD causing the emergence of pioneers and advancements made through the effort of various scientists and researchers, these fields as oneself came to light as a path of research in their own right. Different potential ideas in physics has utilized the mathematics as the diagonistic tool and various prescription came from sectors like Classical Physics, Modern Physics, Computational Physics, Theoritical Physics, Applied Physics, Meta Physics, Solar Physics, Bio Physics, Astro Physics, etc., for creation, invention and discovery as the Physics is the study of science that deals with energy and matter and their interactive nature with each other.
University of Alberta, Canada
Time : 12:25-12:50
Mehdi Nosrati received the M.S degree in electrical engineering from Tarbiat Modares University, Tehran, Iran, in 2006. He was lecturer for 4 years in the university. He has been starting his Ph.D program from Sept. 2011 in the University of Alberta. His current research interest includes microwave and millimeter-wave components. Integrating MEMS actuator with waveguide structures to design tunable microwave components is the main part of his research as the Ph. D student. Moreover, his personal research interests include the nature of electromagnetic waves and Maxwell’s equations.
Maxwell’s equations are the main foundation of the current communication technology; however, they are still incomplete with some ambiguities and unknown parameters. Magnetic current is apparently the main missing part of these equations . In this talk, we resolve to revise these equations and the conventional definitions of the terms and parameters from the beginning merely based on logical theory to justify all measurements so far. These revisions will be initiated by modifying Bohr’s Model and physical differentiations of magnetic and electrical fluxes to justify all electromagnetic phenomena under a consistent umbrella. Consequently, we can theoretically present a rational illustration of magnetic current and amend the contradictions and inconsistencies in the current models and theory of electromagnetic waves. As given in current Maxwell’s equations given in (1)-(2), these equations are not balanced where the right sides of these equations consist of two Equ. (1) and three components Equ.(2). Few researches have been theoritically done in the literature to find this missing term where it has been defined as a multiplication of a coefficient by magnetic field. While this definition mathematically provides a substantial model of this missing term, it does not discuss the physical interpretation of the used coefficient in the definition.