Fabrice Bethuel, Haim Brézis, Frederic Helein

Ginzburg-Landau Vortices

• Broschiertes Buch

Produktbeschreibung

The original motivation of this study comes from the following questions that were mentioned to one ofus by H. Matano. Let 2 2 G= B = {x=(X1lX2) E 2 ; x~ + x~ = Ixl 1}. 1 Consider the Ginzburg-Landau functional 2 2 (1) E~(u) = ~ LIVul + 4~2 L(lu1 _1)2 which is defined for maps u E H1(G;C) also identified with Hl(G;R2). Fix the boundary condition 9(X) =X on 8G and set H; = {u E H1(G;C); u = 9 on 8G}. It is easy to see that (2) is achieved by some u~ that is smooth and satisfies the Euler equation in G, -~u~ = :2 u~(1 _lu~12) (3) { on aGo u~ =9 Themaximum principleeasily implies (see e.g., F. Bethuel, H. Brezisand F. Helein (2]) that any solution u~ of (3) satisfies lu~1 ~ 1 in G. In particular, a subsequence (u~,.) converges in the w - LOO(G) topology to a limit u .

Produktdetails

• Progress in Nonlinear Differential Equations and Their Applications 13
• Verlag: Birkhäuser / Birkhäuser Boston / Springer, Basel
• Artikelnr. des Verlages: 978-0-8176-3723-1
• 1994.
• Seitenzahl: 196
• Erscheinungstermin: 28. März 1994
• Englisch
• Abmessung: 235mm x 155mm x 11mm
• Gewicht: 286g
• ISBN-13: 9780817637231
• ISBN-10: 0817637230
• Artikelnr.: 21831640

Inhaltsangabe

I. Energy estimates for S1-valued maps.- 1. An auxiliary linear problem.- 2. Variants of Theorem I.1.- 3. S1-valued harmonic maps with prescribed isolated singularities. The canonical harmonic map.- 4. Shrinking holes. Renormalized energy.- II. A lower bound for the energy of S1-valued maps on perforated domains.- III. Some basic estimates for u?.- 1. Estimates when G=BR and g(x)=x/ x .- 2. An upper bound for E? (u?).- 3. An upper bound for $$ frac{1}{{{varepsilon^2}}}{smallint_G}{left( {{{left {{u_{varepsilon }}} right }^2} - 1} right)^2} $$.- 4. $$ left {{u_e}} right geqslant frac{1}{2} $$ on "good discs".- IV. Towards locating the singularities: bad discs and good discs.- 1. A covering argument.- 2. Modifying the bad discs.- V. An upper bound for the energy of u? away from the singularities.- 1. A lower bound for the energy of u? near aj.- 2. Proof of Theorem V.l.- VI. u?n converges: u? is born!.- 1. Proof of Theorem VI.1.- 2. Further properties of u? : singularities have degree one and they are not on the boundary.- VII. u? coincides with THE canonical harmonic map having singularities (aj).- VIII. The configuration (aj) minimizes the renormalized energy W.- 1. The general case.- 2. The vanishing gradient property and its various forms.- 3. Construction of critical points of the renormalized energy.- 4. The case G=B1 and $$ gleft( theta right) = {e^{{itheta }}} $$.- 5. The case G=B1 and $$ gleft( theta right) = {e^{{itheta }}} $$ with d?.- IX. Some additional properties of u?.- 1. The zeroes of u?.- 2. The limit of $$ left{ {{E_{varepsilon }}left( {{u_{varepsilon }}} right) - pi dleft {log varepsilon } right } right} $$ as $$ varepsilon to 0 $$.- 3. $$ {smallint_G}{left {nabla left {{u_{varepsilon }}}right } right ^2} $$ remains bounded as $$ varepsilon to 0 $$.- 4. The bad discs revisited.- X. Non minimizing solutions of the Ginzburg-Landau equation.- 1. Preliminary estimates; bad discs and good discs.- 2. Splitting $$ left {nabla {v_{varepsilon }}} right $$.- 3. Study of the associated linear problems.- 4. The basic estimates: $$ {smallint_G}{left {nabla {v_{varepsilon }}} right ^2} leqslant Cleft {log ;varepsilon } right $$ and $$ {smallint_G}{left {nabla {v_{varepsilon }}} right ^p} leqslant {C_p} $$ for p

Rezensionen

"The three authors are well-known excellent specialists in nonlinear functional analysis and partial differential equations and the material presented in the book covers some of their recent and original results. The book is written in a very clear and readable style with many examples."

--ZAA

"...the book gives a very stimulating account of an interesting minimization problem. It can be a fruitful source of ideas for those who work through the material carefully."

--ZAMP