Fatigue Behaviour of Steel Bridges

Sh., Urushadze; Frýba, Ladislav; Škaloud, Miroslav; Zörnerová, Marie

doi:10.3850/978-981-08-6218-3_bs-th039

Steel &Amp; Composite Structures 2010

DOI: 10.3850/978-981-08-6218-3_bs-th039

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Fatigue Behaviour of Steel Bridges

Urushadze Sh.¹,

Ladislav Frýba²,

Miroslav Škaloud³

et al.

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“…First, dynamical breaking of chiral symmetry that leads to mass generation for an initially massless particle is observed here [1]. Second, under certain conditions, confinement is present in QED 3 , and due to comparative simplicity of the model, this phenomenon can be investigated in more detail than in quantum chromodynamics (QCD) [2,3]. Moreover, definite analogy between QED 3 and graphene physics exists [4].…”

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confidence: 96%

Phase transition in three-dimensional quantum electrodynamics at T ≠ 0

Pevzner

Kholod

2010

Russ Phys J

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Dynamic mass generation in 3D quantum electrodynamics (QED 3 ) is considered at T ≠ 0. To solve the Schwinger-Dyson equation for the Matsubara electron Green's function, the ladder approximation is used and the corresponding photonic function is taken in the Landau gauge. In this case, the instant approximation is used for the photonic function. It is established that the process of dynamical mass generation in QED 3 at T ≠ 0 is accompanied by a phase transition. Formal analogy of transitions in the coupling constant is revealed at T ≠ 0 in QED 3 , at T = 0 in QED 4 , and in graphene theory. Critical values of the coupling constant and temperature, calculated numerically based on an approximate analytical solution of the Schwinger-Dyson equation are of the same orders of magnitude.Three-dimensional quantum electrodynamics at T ≠ 0 attracts more and more attention for some reasons. First, dynamical breaking of chiral symmetry that leads to mass generation for an initially massless particle is observed here [1]. Second, under certain conditions, confinement is present in QED 3 , and due to comparative simplicity of the model, this phenomenon can be investigated in more detail than in quantum chromodynamics (QCD) [2,3]. Moreover, definite analogy between QED 3 and graphene physics exists [4].In the present work, dynamical breaking of the chiral symmetry is investigated in the QED 3 at T ≠ 0 and the phase transition which accompanies this process and the subsequent restoration of the initial symmetry are studied. In this case, the Schwinger-Dyson equation for the Green's temperature function of a fermion in the ladder approximation with additional restrictions on the Green's photonic function is used in the Landau gauge and instant approximation.

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mentioning

confidence: 96%

Phase transition in three-dimensional quantum electrodynamics at T ≠ 0

Pevzner

Kholod

2010

Russ Phys J

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Fatigue Behaviour of Steel Bridges

Cited by 1 publication

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Phase transition in three-dimensional quantum electrodynamics at T ≠ 0

Phase transition in three-dimensional quantum electrodynamics at T ≠ 0

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