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The ground state of pluripotency
Biochemical Society Transactions, 2010Pluripotency is defined as the capacity of individual cells to initiate all lineages of the mature organism in response to signals from the embryo or cell culture environment. A pluripotent cell has no predetermined programme; it is a blank slate. This is the foundation of mammalian development and of ES (embryonic stem) cell biology.
Tüzer Kalkan +5 more
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ON NONEXISTENCE OF GROUND STATES
The Quarterly Journal of Mathematics, 1988Let y(t) be a solution of the equation \(q(t,y'))'+a(t)f(y)=0\). In this paper, questions about the qualitative behaviour, such as the positivity, or the oscillatory character, of y on a half-line (T,\(\infty)\) are discussed in relation to structure hypotheses on the functions q,a and f. Particular examples are: \(q(t,v)=| v|^{m-2}v\) and \(q(t,v)=v(1+
F. V. Atkinson, L. A. Peletier
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Journal of Mathematical Physics, 1981
The asymptotic behavior of ground states of two-electron atoms is investigated. Suppose ψ(x1,x2) is the ground state of helium, ρ(x1) = ℱψ2(x1,x2) dx2 the corresponding electron density, and Φ(x2) the ground state of He+. We show that in the L2(dx2)-sense, lim‖x1‖→∞ ψ(x1,x2)[ρ(x1)]−1/2 = Φ(x2), and that ψ[ρ(x1)]−1/2 solves for large ‖x1‖ the ...
M. Hoffmann‐Ostenhof +2 more
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The asymptotic behavior of ground states of two-electron atoms is investigated. Suppose ψ(x1,x2) is the ground state of helium, ρ(x1) = ℱψ2(x1,x2) dx2 the corresponding electron density, and Φ(x2) the ground state of He+. We show that in the L2(dx2)-sense, lim‖x1‖→∞ ψ(x1,x2)[ρ(x1)]−1/2 = Φ(x2), and that ψ[ρ(x1)]−1/2 solves for large ‖x1‖ the ...
M. Hoffmann‐Ostenhof +2 more
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Antiferromagnetic ground state
Journal of Physics and Chemistry of Solids, 1963Abstract The calculations of the energy of the antiferromagnetic ground state by Fisher are corrected. The revised results are in good agreement with other theories for spin 1 2 . The apparent contradictions as to the average z component of spin on one sublattice, and the perpendicular susceptibility in several theories are clearly resolved.
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Solid State Communications, 1998
Abstract Neutron and X-ray diffraction experiments have shown that NaV 2 O 5 consists of zig-zag V chains of average valence 4.5 rather than a charge ordered state at room temperature. Both these experiments revealed superlattice reflections below the phase transition temperature T SP ≈34 K.
M. Weiden +5 more
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Abstract Neutron and X-ray diffraction experiments have shown that NaV 2 O 5 consists of zig-zag V chains of average valence 4.5 rather than a charge ordered state at room temperature. Both these experiments revealed superlattice reflections below the phase transition temperature T SP ≈34 K.
M. Weiden +5 more
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Chemical Physics Letters, 1996
Abstract The ground state of MnCO− is predicted to be 5λ, which is derived from a mixture of the 3d64s2 and 3d54s24p1 occupations of Mn−. The 7λ state, which is derived from the 3d54s24p1 occupation, is found to be only slightly higher in energy. On the basis of the calculations, the two MnCO states observed in photoelectron detachment experiment are
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Abstract The ground state of MnCO− is predicted to be 5λ, which is derived from a mixture of the 3d64s2 and 3d54s24p1 occupations of Mn−. The 7λ state, which is derived from the 3d54s24p1 occupation, is found to be only slightly higher in energy. On the basis of the calculations, the two MnCO states observed in photoelectron detachment experiment are
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On the Ground State of Lithium
Physical Review, 1936Albert Sprague Coolidge, Hubert M. James
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Approximations to the Ground State
2015In this chapter, approximations to calculating the ground state of a many-body system with electronic Hamiltonian \(\hat{H}_e\) as discussed in the previous section are considered.
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