Who Is God?

This article is dedicated to Mr. Bhimsen Panda, my role model & teacher, who have been a source of inspiration & support for me. Sir, this is for you.

Who is God? I think this is by far the most controversial or most asked question of all time which had largely affected our way of thinking. God is our creator, a being which is responsible for the beginning of our universe. Throughout the history, people have been giving many ideas or views. In response to these ideas, people started to believe in some forms of powers which rule the cosmos. After the formation of human civilization, people started to break apart within many believes which is called religion. Today there are Christianity, Islam, Hinduism & Buddhism as major religions along with other kind of minor religions. Every religion has its ideas about the nature. Each & every religion believes in different forms of superpower. All these are OK till social level, but when it comes to science, all these are dismissed. Science doesn’t believe in creator or God because there’s no experimental prove of existence of any kind of super being throughout the universe. Science makes God meaningless. Almost no scientist believes in God. All are atheist. But there’re still few of them, who keep believe in a creator. Prof. Stephen Hawking, regarded as one of the greatest physicist & cosmologist of the century, said in his book The Grand Design that science makes God unnecessary. Only the laws of nature rule. Now I want to be a scientist (astrophysicist) in future. So what view do I hold?

Few years ago, I wasn’t thinking on all these matters as I was too young. But all of a sudden, some days or months earlier, I started to think on the topic. Who is our God? Who created us? The top most priority goes to laws of nature. So, for me laws of nature is the creator or God. Every where we see, every thing is dominated by laws of nature. But still questions arise, was there … Continue reading …

orion’s nebula

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Condensed Matter Field Theory

Condensed Matter Field Theory

Modern experimental developments in condensed matter and ultracold atom physics present formidable challenges to theorists. This book provides a pedagogical introduction to quantum field theory in many-particle physics, emphasizing the applicability of the formalism to concrete problems. This second edition contains two new chapters developing path integral approaches to classical and quantum nonequilibrium phenomena. Other chapters cover a range of topics, from the introduction of many-body tec

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Dualities and Identities for Maximal-Entanglement Quantum Codes. (arXiv:1010.5506v1 [quant-ph])

The dual of an entanglement-assisted quantum error-correcting (EAQEC) code is
the code resulting from exchanging the original code’s information qubits for
its ebits and vice versa. As an introduction to this notion, we show how
entanglement-assisted repetition codes and entanglement-assisted accumulator
codes are dual to each other, much like their classical counterparts, and we
give an explicit, general quantum shift-register circuit that encodes both
classes of codes. We later show that our constructions are optimal, and this
result completes our understanding of these dual classes of codes. We obtain
linear programming bounds for non-degenerate EAQEC codes, by exploiting general
forms of these dualities and corresponding MacWilliams identities. We establish
the Gilbert-Varshamov bound and the Plotkin bound for EAQEC codes, and all of
these bounds allow us to formulate a table of upper and lower bounds on the
minimum distance of any maximal-entanglement EAQEC code with length up to 15
channel qubits. Finally, we provide an upper bound on the block error
probability when transmitting maximal-entanglement EAQEC codes through the
depolarizing channel.

quant-ph updates on arXiv.org

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Lung Cancer Drug Speeds Through Clinical Trials

A new drug called crizotinib shows strong promise for patients with a metastatic form of lung cancer.

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Condensed Matter in a Nutshell

Condensed Matter in a Nutshell

Condensed Matter in a Nutshell is the most concise, accessible, and self-contained introduction to this exciting and cutting-edge area of modern physics. This premier textbook covers all the standard topics, including crystal structures, energy bands, phonons, optical properties, ferroelectricity, superconductivity, and magnetism. It includes in-depth discussions of transport theory, nanoscience, and semiconductors, and also features the latest experimental advances in this fast-developing field

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Illustrated Astrophysics with Neil deGrasse Tyson 2 of 4

Pics added to interview audio. About all kinds of things, including aliens, Mars, life, the universe, and lil’ Ike Newton.
Video Rating: 4 / 5

Narrated by Alan Alda, this introduction to observational astrophysics gives us a brief overview of the field and illuminates some of the interesting questions being currently researched.
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Low-threshold Optical Parametric Oscillations in a Whispering Gallery Mode Resonator. (arXiv:1010.5282v1 [physics.optics])

In whispering gallery mode (WGM) resonators light is guided by continuous
total internal reflection along a curved surface. Fabricating such resonators
from an optically nonlinear material one takes advantage of their exceptionally
high quality factors and small mode volumes to achieve extremely efficient
optical frequency conversion. Our analysis of the phase matching conditions for
optical parametric down conversion (PDC) in a spherical WGM resonator shows
their direct relation to the sum rules for photons’ angular momenta and
predicts a very low parametric oscillations threshold. We realized such an
optical parametric oscillator (OPO) based on naturally phase-matched PDC in
Lithium Niobate. We demonstrated a single-mode, strongly non-degenerate OPO
with a threshold of 6.7 micro-W and linewidth under 10 MHz. This work
demonstrates the remarkable capabilities of WGM-based OPOs and opens the
perspectives for their applications in quantum and nonlinear optics,
particularly for the generation of squeezed light.

physics updates on arXiv.org

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