Results 151 to 160 of about 20,882 (199)
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Journal of Physics A: Mathematical and General, 1997
Summary: The theory of Bogolyubov contains the prescription of replacing the ground-state mode \(\frac{a_0}{\sqrt{V}}\) by a constant \(b\). In a previous contribution, we showed that the Bogolyubov model was thermodynamically unstable. We stabilized this model by adding `forward scattering' terms.
Angelescu, N. +2 more
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Summary: The theory of Bogolyubov contains the prescription of replacing the ground-state mode \(\frac{a_0}{\sqrt{V}}\) by a constant \(b\). In a previous contribution, we showed that the Bogolyubov model was thermodynamically unstable. We stabilized this model by adding `forward scattering' terms.
Angelescu, N. +2 more
openaire +1 more source
2001
Abstract This chapter shows that the superfluid properties of the A and B phases of superfluid 3He are similar, but are different from those of 4He. First, the pseudoisotropic B phase demonstrates both quantized circulation and the Landau criterion for superfluidity.
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Abstract This chapter shows that the superfluid properties of the A and B phases of superfluid 3He are similar, but are different from those of 4He. First, the pseudoisotropic B phase demonstrates both quantized circulation and the Landau criterion for superfluidity.
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2016
AbstractThis chapter presents a general discussion of the phenomenon of superfluidity, starting from the famous Landau criterion for the critical velocity. The Landau expression for the normal (non-superfluid) component of the gas, expressed in terms of the elementary excitations of the system, is derived.
Lev Pitaevskii, Sandro Stringari
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AbstractThis chapter presents a general discussion of the phenomenon of superfluidity, starting from the famous Landau criterion for the critical velocity. The Landau expression for the normal (non-superfluid) component of the gas, expressed in terms of the elementary excitations of the system, is derived.
Lev Pitaevskii, Sandro Stringari
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2014
Abstract This chapter begins by tracing the history of superfluids. It then describes some novel superconductors and superfluids, including copper oxides, heavy fermion metals, strongly anisotropic superconductors, organic metals, and iron-based pnictides.
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Abstract This chapter begins by tracing the history of superfluids. It then describes some novel superconductors and superfluids, including copper oxides, heavy fermion metals, strongly anisotropic superconductors, organic metals, and iron-based pnictides.
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Superconductivity, superfluidity and quantum geometry in twisted multilayer systems
Nature Reviews Physics, 2022Päivi Törmä, Sebastiano Peotta
exaly
Evidence of superfluidity in a dipolar supersolid from nonclassical rotational inertia
Science, 2021Luca Tanzi +2 more
exaly