On the role of the magnetic dipolar interaction in cold and ultracold collisions: Numerical and analytical results for NH($^3\Sigma^-$) + NH($^3\Sigma^-$) [PDF]
, 2011 We present a detailed analysis of the role of the magnetic dipole-dipole interaction in cold and ultracold collisions. We focus on collisions between magnetically trapped NH molecules, but the theory is general for any two paramagnetic species for which ...
A. André +55 more
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Universal structure of subleading infrared poles in gauge theory amplitudes [PDF]
, 2008 We study the origin of subleading soft and collinear poles of form factors and amplitudes in dimensionally-regulated massless gauge theories. In the case of form factors of fundamental fields, these poles originate from a single function of the coupling,
Dixon, Lance J. +2 more
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Magnetic Field Amplification by Small-Scale Dynamo Action: Dependence on Turbulence Models and Reynolds and Prandtl Numbers [PDF]
, 2012 The small-scale dynamo is a process by which turbulent kinetic energy is converted into magnetic energy, and thus is expected to depend crucially on the nature of turbulence.
A. Kolmogorov +15 more
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Diversity of universes created by pure gravity [PDF]
, 2006 We show that a number of problems of modern cosmology may be solved in the framework of multidimensional gravity with high-order curvature invariants, without invoking other fields. We use a method employing a slow-change approximation, able to work with
Abbott L F +23 more
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Non-diffusive phase spreading of a Bose-Einstein condensate at finite temperature [PDF]
, 2007 We show that the phase of a condensate in a finite temperature gas spreads linearly in time at long times rather than in a diffusive way. This result is supported by classical field simulations, and analytical calculations which are generalized to the ...
A. B. Kuklov +13 more
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Derivative expansion of the renormalization group in O(N) scalar field theory [PDF]
, 1997 We apply a derivative expansion to the Legendre effective action flow equations of O(N) symmetric scalar field theory, making no other approximation. We calculate the critical exponents eta, nu, and omega at the both the leading and second order of the ...
Adams +42 more
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Membranes from monopole operators in ABJM theory: large angular momentum and M-theoretic AdS_4/CFT_3 [PDF]
, 2013 We consider states with large angular momentum to facilitate the study of the M-theory regime of the AdS_4/CFT_3 correspondence. We study the duality between M-theory in AdS_4xS^7/Z_k and the ABJM N=6 Chern-Simons-matter theory with gauge group U(N)xU(N)
Kovacs, Stefano +2 more
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Practical sketching algorithms for low-rank matrix approximation [PDF]
, 2017 This paper describes a suite of algorithms for constructing low-rank approximations of an input matrix from a random linear image of the matrix, called a sketch.
Cevher, Volkan +3 more
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Stress-Energy Tensor of Adiabatic Vacuum in Friedmann-Robertson-Walker Spacetimes
, 2011 We compute the leading order contribution to the stress-energy tensor corresponding to the modes of a quantum scalar field propagating in a Friedmann-Robertson-Walker universe with arbitrary coupling to the scalar curvature, whose exact mode functions ...
Kaya, Ali, Tarman, Merve
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Semiclassical quantisation for a bosonic atom-molecule conversion system
, 2015 We consider a simple quantum model of atom-molecule conversion where bosonic atoms can combine into diatomic molecules and vice versa. The many-particle system can be expressed in terms of the generators a deformed $SU(2)$ algebra, and the mean-field ...
Graefe, Eva-Maria +2 more
core +1 more source