Saturday 23 March 2013
Wednesday 20 March 2013
Saturday 9 March 2013
Indian Institute of Technology, Indore
Indian Institute of Technology, Indore
PG/Ph.D Programme Admission-2013
IIT Indore invites applications from
highly motivated and research oriented students for its following Full
Time Regular PG and Ph.D Programmes
School of Basic Sciences
M.Sc/M.Sc + Ph.D Dual Degree
Chemistry: Minimum
first Class (60% marks for General/OBC (55% for SC/ST) category in
aggregate or as specified by the university/institute, or CPI/CGPA of
6.0 for Genera/OBC (5.5 for SC/ST) category on the scale of 10, with
corresponding proportional requirements when the scales are other than
on 10, or a first class as specified by the university/institute
awarding the degree) bachelor’s degree with Chemistry as a subject for
three years/six semesters and should have passed Mathematics at (10+2)
level, and qualification in JAM-2013 in Chemistry
Particle caught flip-flopping
Particle caught flip-flopping
D meson’s switch between matter and antimatter could help uncover new particles
A particle with an identity crisis could provide the next big
discovery at the world's largest particle accelerator. The D meson has
been caught in the act of flipping between matter and antimatter,
researchers report online March 5 in Physical Review Letters.
D mesons, like other mesons, are short-lived particles that
emerge from the shrapnel of proton collisions at CERN’s Large Hadron
Collider outside Geneva. All of these particles decay within tiny
fractions of a second. But four mesons, including the D, occasionally do
something strange first: They become antiparticles. In the same vein,
anti-D mesons can switch and become mesons before they decay. While
experimenters have observed B, strange B and K mesons exhibit this
shifty behavior, this is the first time physicists have seen D mesons
that start as matter end up decaying as antimatter, and vice versa.
The next step, says Syracuse University physicist Steve Blusk,
one of about 600 members of the team that made the discovery, is to
compare the number of D meson decays with the number of anti-D meson
decays. Those numbers should be equal, but physicists are hoping that
one number is slightly larger than the other, Blusk says, because that
would mean an undiscovered particle interferes with the D meson's
oscillations.
Thursday 7 March 2013
Indian Institute of Science Education and Research, Mohali
Indian Institute of Science Education and Research, Mohali - Ph.D Admission
The Indian Institute of Science Education and
Research invites applications for an interdisciplinary Ph.D in the
Humanities and Social Sciences
Eligibility Criteria: M.A./MS/M.Phil/ B.Tech/B.Arch or equivalent degree in any subject with minimum 60% marks (or equivalent grade)
Selection Criteria: Please send email to hssphd@iisermohali.ac.in
with the following; CV; a one page statement of Intent outlining
research interests and previous experience; graduate transcripts,
percentile in national level exams taken such as UGC NET, GATE; names
and contact details of 3 referees
The shortlisted candidates will be required to appear for a research aptitude test and an interview at IISER, Mohali
The last date for submitting application for the August, 2013 session is 15th April, 2013
No vacancy around stars
No vacancy around stars
Planets pack tightly in the Milky Way
Planetary systems in our galaxy are packed to the brim, according
to a new study — throw in another orb and all hell will break loose.
The study, posted February 28 at arXiv.org, argues that planets around other stars share an evolutionary history similar to that of the solar system’s eight planets.
“This study supports results that have been building for a long
time,” says Jack Lissauer, a space scientist at NASA Ames Research
Center in Moffett Field, Calif., who was not involved in the study. In
2011, he discovered Kepler-11, a star with planets so tightly packed
around it that five of them have smaller orbits than Mercury’s.
Tuesday 5 March 2013
Chennai Mathematical Institute-PhD admission
Chennai Mathematical Institute B.Sc / M.Sc / Ph.D Admission 2013
1. B.Sc (Hons) in Mathematics and Computer Science (3 year integrated course)
2. B.Sc (Hons) in Mathematics and Physics (3 year integrated course)
3. M.Sc: Mathematics, Applications of Mathematics, Computer Science
4. Ph.D: Mathematics, Computer Science, Physics
Eligibility
B.Sc (Hons) Mathematics and Computer Science: 12th standard or equivalent
B.Sc (Hons) Mathematics and Physics: 12th standard or equivalent
M.Sc (Mathematics): B.Sc (Math)/B.Math/B.Stat/B.E./B.Tech
M.Sc (Applications of Mathematics): B.Sc (Math, Physics, Statistics)/B.Math/B.Stat/B.E./B.Tech
M.Sc (Computer Science): B.E./B.Tech/B.Sc (C.S.)/BCA or B.Sc (Math) with a strong background in CS
Ph.D (Mathematics): B.E./B.Tech/B.Sc (Math)/M.Sc (Math)
Ph.D (Computer Science): B.E./B.Tech/M.Sc (C.S.)/MCA
Ph.D (Physics): B.E./B.Tech/B.Sc (Physics)/M.Sc (Physics)
Entrance Exam: For all the programmes, applicants will have to take an entrance examination on 15th May, 2013, Wednesday
Tweezers Work Well Under Pressure
Tweezers Work Well Under Pressure
Courtesy R. Bowman/University of Glasgow
Optical Trapping at Gigapascal Pressures
Published February 28, 2013
Diamond anvil cells can apply millions of atmospheres of
pressure to a solid or liquid, while allowing it to be observed through
the diamond “windows.” For the first time, researchers have introduced
optical tweezers into one of these cells in order to trap sample
particles. The experiment, described in Physical Review Letters,
directly measured the viscosity of the water surrounding the particles.
Further development of this technique could permit investigations of
the mechanical changes in biological cells and other soft materials
placed under high pressure.
Star-Shaped Waves
Star-Shaped Waves
J. Rajchenbach et al., Phys. Rev. Lett. (2013)
Observation of Star-Shaped Surface Gravity Waves
Published February 28, 2013
The ocean can produce exotic wave forms, such as “freak”
waves, when normal waves combine in just the right way. These unusual
wave patterns can—theoretically—take on a variety of different shapes,
but researchers have so far only managed to produce a few distinct cases
in the lab. As reported in Physical Review Letters,
Jean Rajchenbach and colleagues at CNRS and the University of Nice in
France have produced star- and polygon-shaped standing waves by
vertically shaking a vessel filled with liquid oil.
Like Prefers Like, Except in a Virus
Like Prefers Like, Except in a Virus
S. V. Venev and K. B. Zeldovich, Phys. Rev. Lett. (2012)
Segment Self-Repulsion is the Major Driving Force of Influenza Genome Packaging
Published February 28, 2013
Influenza and certain other viruses have a segmented genome,
in which each segment is a strand of RNA that codes for a particular
protein. New viruses forming from the many genome copies in an infected
cell must amass one of each type of segment—and no duplicates—in order
to go on to infect other cells and replicate. A better understanding of
how segments recognize each other to form a complete genome could
therefore lead to new antiviral drugs. In Physical Review Letters,
Sergey Venev and Konstantin Zeldovich at the University of
Massachusetts Medical School, Worcester, use a simple statistical model
to predict the most efficient segment-signaling mechanism for avoiding
duplicated genetic material.
Why the Solar Wind Blows Hot and Cold
Why the Solar Wind Blows Hot and Cold
Miloslav Druckmüller/Brno University of Technology, Peter Aniol, Vojtech Rusin
One of the biggest puzzles of the solar wind is why certain
ions in the wind are hotter than others. The temperature of helium ions,
for example, is on average 5 times higher than that of hydrogen ions.
Now, writing in Physical Review Letters,
Justin Kasper of the Harvard-Smithsonian Center for Astrophysics,
Massachusetts, and collaborators present a model that demonstrates how
certain plasma waves, called ion cyclotron waves, will preferentially
heat heavier ions travelling below a threshold velocity.
Rainbow Pattern May Allow Laser Damage Monitoring
Rainbow Pattern May Allow Laser Damage Monitoring
Published
March 1, 2013
|
Physics 6, 24 (2013)
|
DOI:
10.1103/Physics.6.24
Y. Liu et al., Phys. Rev. Lett. (2013)
Not just a pretty face. This colorful pattern
of light scattered from a solid surface being hit with laser pulses can
convey details of the surface damage, such as the size of the
laser-generated crater.
Catch and Release of Photons
Catch and Release of Photons
Published
March 4, 2013
|
Physics 6, 25 (2013)
|
DOI:
10.1103/Physics.6.25
Catch and Release of Microwave Photon States
Published March 4, 2013 | PDF (free)
Storage and Control of Optical Photons Using Rydberg Polaritons
Published March 4, 2013 | PDF (free)
APS/Antoine Browaeys
Figure 1
In their experiment, Yin et al. tune the energy levels g and e in a superconducting circuit so that the transition frequency ν
is resonant with the microwave cavity resonator. The resonator is
connected to a transmission line with an adjustable coupling constant κ , which controls the release of microwave photons.
APS/Antoine Browaeys
Figure 2
In the experiment of Maxwell et al.,
the interface consists of an atomic cloud of rubidium atoms, whose
states have a ladder configuration (shown on the right). The combination
of a weak signal laser and control laser excites one atom (shown in
red) into a Rydberg state r ,
while the other atoms remain in the ground state due to Rydberg
blockade (see text). The researchers can couple this collective
polariton state to another Rydberg state r′ using microwaves (MW).
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