1,002 research outputs found
Generalized Emission Functions for Photon Emission from Quark-Gluon Plasma
The Landau-Pomeranchuk-Migdal effects on photon emission from the quark gluon
plasma have been studied as a function of photon mass, at a fixed temperature
of the plasma. The integral equations for the transverse vector function () and the longitudinal function () consisting of multiple scattering effects are solved by the
self consistent iterations method and also by the variational method for the
variable set \{\}, considering the bremsstrahlung and the processes. We define four new dynamical scaling variables,
,,, for bremsstrahlung and {\bf aws} processes and
analyse the transverse and longitudinal components as a function of
\{\}. We generalize the concept of photon emission function and we
define four new emission functions for massive photon emission represented by
, , , . These have been constructed using the exact
numerical solutions of the integral equations. These four emission functions
have been parameterized by suitable simple empirical fits. In terms of these
empirical emission functions, the virtual photon emission from quark gluon
plasma reduces to one dimensional integrals that involve folding over the
empirical functions with appropriate quark distribution
functions and the kinematic factors. Using this empirical emission functions,
we calculated the imaginary part of the photon polarization tensor as a
function of photon mass and energy.Comment: In nuclear physics journals and arxiv listings, my name used to
appear as S.V.S. Sastry. Hereafter, my name will appear as, S.V.
Suryanarayan
Magnetic and magnetocaloric properties of HoCr0.75Fe0.25O3 compound
We report on the magnetic and magnetocaloric properties of HoCr0.75Fe0.25O3 compound
around the Néel temperature (TN), which is due to Cr3+ ordering. Susceptability (χ) vs.
temperature (T) graph of HoCr0.75Fe0.25O3 compound infer two transitions due to the ordering
of Cr3+ moments (TN ~ 155 K) and Ho3+ moments (TNHo ~ 8 K). Magnetic entropy (–ΔSM)
value of 1.14 J kg-1 K-1 around 157.5 K with a magnetic field (H) of 90 kOe is attributed to
antiferromagnetic (AFM) ordering of Cr3+ moments. A maximum value of adiabatic
temperature (ΔTad) ~ 0.41 K around TN is obtained and is found to increases with applied
magnetic field. Negative slope for H/M vs. M2 graph is evident for HoCr0.75Fe0.25O3
compound below TN, which indicates the first order phase transition. Quantified values of –
ΔSM and ΔTad opens up the way to explore rare earth orthochromites for the MCE properties
and refrigeration applications
Photo-elastic effect in crystals: a new result for the T<SUB>h</SUB> class
This article does not have an abstract
A note on the even, odd and half-overtones in piezo-electric crystal plates
This article does not have an abstract
Supersymmetric Electromagnetic Waves on Giants and Dual-Giants
We set up the BPS equations for a D3-brane moving in AdS_5 \times S^5 which
preserves two supercharges and with all bosonic fields turned on in the
world-volume theory. By solving these, we find generalizations of Mikhailov
giants and wobbling dual-giants that include electromagnetic waves propagating
on their world-volume. For these giants (dual-giants) we show that the BPS
field strength is the real part of the pull-back of a holomorphic 2-form in the
ambient space C^3 (C^{1,2}) onto the world-volume.Comment: 18 page
Counting 1/8-BPS Dual-Giants
We count 1/8-BPS states in type IIB string theory on AdS_5 x S^5 background
which carry three independent angular momenta on S^5. These states can be
counted by considering configurations of multiple dual-giant gravitons up to N
in number which share at least four supersymmetries. We map this counting
problem to that of counting the energy eigen states of a system of N bosons in
a 3-dimensional harmonic oscillator. We also count 1/8-BPS states with two
independent non-zero spins in AdS_5 and one non-zero angular momentum on S^5 by
considering configurations of arbitrary number of giant gravitons that share at
least four supersymmetries.Comment: 19 page
Impulse Buying in the Digital Age: A Dimensional Study on Influencer Marketing Impact on Millennials
This study explores the relationship between influencer characteristics, consumer emotions, and self-construction in the context of impulse buying among millennials in the digital age. It examines how specific traits and qualities of influencers influence millennials' emotions and shape their self-identity during the process of impulse buying. The research investigates the dimensions of influencer marketing that have the most significant impact on millennials' emotional responses and their construction of self-image. By analysing the interplay between influencer characteristics, consumer emotions, and self-construction, this study provides valuable insights into the underlying mechanisms driving impulse buying behavior among millennials in the digital era. The results provide new insight into the power of influencers to sway customer behavior and suggest ways in which businesses may more successfully employ influencer marketing to connect with and convert young buyers
Effect of integrated nutrient management on dry herbage yield, nutrient uptake and profitability of French Basil (Ocimum basilicum L.)
Field experiments were conducted at ICAR - Indian Institute of Horticultural Research, Bengaluru during Kharif season of 2015 and 2016 with nine treatments and three replications in a randomized block design to find out the effect of integrated nutrient management on dry herbage yield, nutrient uptake and economics of sweet basil (Ocimum basilicum). The results revealed that the conjunctive use of inorganic fertilizer along with FYM increased the dry herbage yield and nutrient uptake of sweet basil. Application of recommended FYM (10 t/ha) along with recommended NPK (160:80:80 kg/ha) registered the highest dry herbage yield (8.43 and 3.76 t ha- 1) in the main crop and ratoon, respectively and maximum uptake of nutrient in the main crop as N (155.67 and 113.19 kg/ha), P (43.80 and 32.43 kg/ha) and K (163.33 and 116.16 kg/ha) and in ratoon (56.43 and 26.65 kg ha-1), (16.14 and 14.01 kg ha-1) and (55.65 and 39.27 kg ha-1) in 2015 and 2016 respectively. Highest B: C ratio (5.49) was obtained with application of full dose of recommended NPK fertilizer during 2015. While in 2016, the maximum B: C ratio (3.71) was recorded with application of recommended dose of NPK (160:80:80 kg/ha) + FYM (10 t/ha)
Asymptotics for numbers of line segments and lines in a square grid
We present an asymptotic formula for the number of line segments connecting
q+1 points of an nxn square grid, and a sharper formula, assuming the Riemann
hypothesis. We also present asymptotic formulas for the number of lines through
at least q points and, respectively, through exactly q points of the grid. The
well-known case q=2 is so generalized
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