October 2011 - Vip-all.phys

[vip-all] IFA-nyheder, uge 44 / IFA news, week 44
by Mette Alstrup Lie 31 Oct '11

31 Oct '11

*Læs følgende nyheder for uge 44: * Solen kaster lys over pulserende stjerner <http://videnskab.dk/miljo-naturvidenskab/solen-kaster-lys-over-pulserende-s…> En international forskergruppe, der bl.a. favner astrofysikere fra Aarhus Universitet, har fundet ud af, at Solen og Delta Scuti-stjerner ikke udtrykker sig så forskelligt. Informationsmøde med VILLUM fonden onsdag den 16. november - tilmeldingsfrist 10. november <http://phys.au.dk/nyhed/artikel/tilmeldingsfrist-1011-informationsmoede-med…> Referat af møder i IFAs forretningsudvalg den 27. oktober <http://phys.au.dk/nyhed/artikel/referat-vip-tap-fu-27102011/?no_cache=1> PwC Skatterådgivning om ind- og udstationering <http://phys.au.dk/fileadmin/site_files/nyheder/Skattemaessig_assistance_til…> Se ansøgningsfrister <http://phys.au.dk/arrangementer-og-nyheder/opslag/> Se kalenderen for kommend <http://phys.au.dk/arrangementer-og-nyheder/>e arrangementer <http://phys.au.dk/arrangementer-og-nyheder/> *IFA Nyheder lægges løbende på hjemmesiden.* Linket hertil ligger på forsiden, nederst i menuen til højre. Login til de interne sider for medarbejdere <http://phys.au.dk/om-instituttet/generel-information/medarbejderinformation…> : bruger: intra kode: ifaintra Bidrag sendes til ifa-nyt(a)phys.au.dk <mailto:ifa-nyt@phys.au.dk> __________ *IFA News, week 44* Information meeting with the VILLUM fonden Wednesday 16 November - registration deadline 10 November <http://phys.au.dk/nyhed/artikel/tilmeldingsfrist-1011-informationsmoede-med…> Minutes of IFA's executive committee meetings held 27 October <http://phys.au.dk/nyhed/artikel/referat-vip-tap-fu-27102011/?no_cache=1> Tax advice regarding in- and expatriation <http://phys.au.dk/fileadmin/site_files/nyheder/Skattemaessig_assistance_til…> Please find the list of calls <http://phys.au.dk/en/events-and-news/calls/> See coming events and news<http://phys.au.dk/en/events-and-news/> *Remember to check the internal news online**. * Go to News for employees at IFA <http://phys.au.dk/en/the-department/general-information/information-for-emp…>. Login to internal news online <http://phys.au.dk/om-instituttet/generel-information/medarbejderinformation…>: user: intra password: ifaintra** Medvenlig hilsen / Kind regards Mette Lie -- Mette Alstrup Lie Department of Physics and Astronomy Aarhus University Ny Munkegade 120 DK-8000 Aarhus C Denmark Office 1522-214 e-mail:lie@phys.au.dk Tel: +45 8942 3619

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[vip-all] TODAY: Ultracold atoms talk - Ivar Zapata
by Nikolaj Thomas Zinner 31 Oct '11

31 Oct '11

ULTRACOLD ATOMS TALK Speaker: Ivar Zapata, Departamento de Física de Materiales, Universidad Complutense de Madrid, Madrid, Spain Title: Triplet pair correlations in s-wave superfluids as a signature of the FFLO state Time: Monday, October 31, 14.15 to 15.00 Place: 1520-732 Abstract: We show that triplet pairing correlations are generated in purely s-waves superfluids whenever population imbalance enforces anisotropic Fulde-Ferrell (FF) or inhomogeneous Larkin-Ovchinikov (LO) states. The same set of quasiparticle states contributes to the triplet component and to the polarization, thus spatially correlating them. In the LO case, this set forms a narrow band of Andreev states centered on the nodes of the s-wave order parameter. This picture naturally provides a unifying explanation of previous findings that attractive p-wave interaction stabilizes FFLO states. We also study a similar triplet mixing which occurs when a balanced two-component system displays FFLO type oscillations due to a spin-dependent optical lattice. We discuss how this triplet component can be measured in systems of ultra-cold atoms using a rapid ramp across a p-wave Feshbach resonance. This should provide a smoking gun signature of FFLO states. Nikolaj Zinner ---------------------------- Nikolaj Thomas Zinner, Ph.D. Department of Physics and Astronomy University of Aarhus Ny Munkegade 120 DK-8000 Aarhus C (+45)8942 3653 phone (+45)8612 0740 fax Office: 1520-534 E-mail: zinner(a)phys.au.dk URL: http://www.phys.au.dk/~zinner

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[vip-all] Til AURUS brugere
by Ruth Laursen 30 Oct '11

30 Oct '11

Kære alle der bruger AURUS ØCS har bedt mig videreformidle denne oplysning: Når man når til trin 4 i afregningen, må man ikke mere vælge en bestemt person. Man skal vælge NATKONTROLLANTGRUPPEN. Det er nemlig sådan at der bliver en kontrollantgruppe for hvert hovedområde (for det hele bliver samlet til et fælles transaktionscenter for AU). Man skal til gengæld vælge en person under drop-down feltet: Godkender nemlig den person der har med projektet at gøre (Bodil, Lone eller Rasmus når vi taler om IFA og ISA). CVS har deres egne som jeg ikke er helt bekendt med endnu. Jeg ved godt at I får rigtig mange direktiver om det ene og det andet, men husk: at jeg er kun budbringeren. Venlig hilsen ***************************** Ruth Laursen Head of Department Secretariat Department of Physics and Astronomy Aarhus University Ny Munkegade 120 DK - Aarhus C e-mail: ruth(a)phys.au.dk Phone: +45 8942 3706 Mobile: +45 2338 2335 Office: 1522-212

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[vip-all] Lager af UHV-udstyr / stock of UHV equipment
by Anders Strøbech Damgaard 27 Oct '11

27 Oct '11

Kære brugere af vakuumudstyr ved IFA, Som det vil være flere bekendt opretholder Instituttet, finansieret af ISA, et lager af UHV udstyr i lokale 1525-132. Adgang til dette lager kræver brug af specialnøgle, som øjensynligt flere på instituttet besidder. Lageret administreres af Anders Damgaard og bør uden forudgående aftale KUN benyttes af hans gruppe samt af medarbejdere ved det mekaniske værksted. Andre vil naturligvis være velkomne til at henvende sig til Anders eller en af hans medarbejdere for at aftale brug af vakuum dele, der så bagefter naturligvis skal suppleres op. Med venlig hilsen Anders Damgaard og Søren Pape Møller Dear users of vacuum-equipment at IFA, At you might be aware, the department maintains, financed by ISA, a stock of UHV equipment in room 1525-132. Access to his stock room requires a special key, apparently in the possession of several employees. This stock is administered by Anders Damgaard, and should ONLY without notice be used by his group and staffs from the mechanical workshop. Others are clearly welcome to contact Anders or any in his staff to settle use of vacuum parts, which afterwards clearly will have to be replaced. Best regards Anders Damgaard and Søren Pape Møller

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[vip-all] AMO seminar today 15:15 in !!! 1520-732 !!!
by Jacob Sherson 27 Oct '11

27 Oct '11

Title: Resonant Hawking radiation in Bose-Einstein condensates Speaker: Ivar Zapata, Universidad Complutense de Madrid, Madrid, Spain Time: Thursday, October 27, 15.15 to 16.00 Place: 1520-732 NOTE: not in Phys. Aud.! Abstract: We study double-barrier interfaces separating regions of asymptotically subsonic and supersonic flow of Bose-condensed atoms. These setups contain at least one black hole sonic horizon from which the analogue of Hawking radiation should be generated and emitted against the flow in the subsonic region. Multiple coherent scattering by the double-barrier structure strongly modulates the transmission probability of phonons, rendering it very sensitive to their frequency. As a result, resonant tunneling occurs with high probability within a few narrow frequency intervals. This gives rise to highly non-thermal spectra with sharp peaks. We find that these peaks are mostly associated with decaying resonances and only occasionally with dynamical instabilities. Even at achievable non-zero temperatures, the radiation peaks can be dominated by spontaneous emission, i.e. enhanced zero-point fluctuations, and not, as is often the case in analogue models, by stimulated emission. Jacob Sherson and Aurélien Dantan Coffee, tea and cake will be served at 15.05 Dr. Jacob Friis Sherson Department of Physic and Astronomy Aarhus University Ny Munkegade 120 8000 Århus C Denmark Tel.:+45 8942 3680

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[vip-all] General Physics Colloquium in Aud. G2 today at 3:15 p.m.
by Kate Andersen 26 Oct '11

26 Oct '11

Title: Fluctuations in out of equilibrium systems: from theory to experiments Speaker: S. Ciliberto, Ecole Normale Supérieure de Lyon, Laboratoire de Physique Time: Wednesday, 26 October, 2011 at 3:15 p.m. Place: Auditorium G2, Department of Mathematics Abstract The study of the fluctuations in out of equilibrium systems is a subject of current interest ranging from dynamical systems to stochastic systems. I will discuss the very general problem of the fluctuations of injected and dissipated power in these systems. There are presently rather few theoretical results which may predict several statistical properties of these fluctuations. One such case is the Fluctuation Theorem (FT) which has been first found in the context of dynamical systems and later extended to stochastic ones. The proof relies upon several hypothesis which merit to be experimental test. I will focus, from the experimental point of view, on stochastic systems dominated by thermal fluctuations. I describe a rather general case, that is the work fluctuations of an oscillator in contact with a heat reservoir and driven out of equilibrium by an external force. I will also consider the fluctuations of the heat dissipated towards the heat bath. The experimental analysis in the context of Fluctuation Theorem (FT) allows us to highlight the general properties of this theorem and emphasise the importance of the theorem for experi-mental systems. We discuss the finite time corrections that depend on the observable and show that for the total entropy production rate the FT is verified for all times. The role of non-linearities is considered by briefly describing the experimental results of a Brownian particle confined in a double well potential and driven out of equilibrium by an external force. The important con-sequences of the fluctuation theorem and some useful applications to the analysis of experi-mental data will be described. We will finally discuss the applications to a dynamical system. _____ Coffee/tea and cake will be served at 3 p.m. David Field

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[vip-all] Ombygning af biblioteket
by Ruth Laursen 25 Oct '11

25 Oct '11

Kære alle, På grund af ombygning bliver biblioteket pakket ned i uge 43. Håndbøger er nu placeret på 6. etage, hvor de kan benyttes som sædvanligt. Tidsskrifter og monografier kommer på fjernlager. I perioden hvor biblioteket er nedpakket skaffer jeg som sædvanlig ønsket litteratur, også selv om vi har det. Mvh Susanne Susanne Nørskov Bibliotekar library(a)phys.au.dk Fysik & Astronomi biblioteket Åbningstider: mandag-fredag: kl. 8.20-11.20 ******************************* Ruth Laursen Head of Department Secretariat Department of Physics and Astronomy Aarhus University Ny Munkegade 120 8000 Aarhus C Denmark e-mail: ruth(a)phys.au.dk Office: 1522-212 Mobile: 2338 2335

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[vip-all] IFA-nyheder, uge 43 / IFA news, week 43
by Mette Alstrup Lie 24 Oct '11

24 Oct '11

*Læs følgende nyheder for uge 43: * Einsteins "spooky action" forbedrer præcisionsmålinger <http://science.au.dk/nyheder-og-arrangementer/nyhed/artikel/einsteins-spook…> Nobelprisen i fysik trækker tråde til Aarhus Universitet <http://www.au.dk/om/nyheder/nyhed/artikel/nobelprisen-i-fysik-traekker-traa…> Dagsorden for møde i Samarbejdsudvalget, 26. oktober <http://phys.au.dk/nyhed/artikel/dagsorden-su-moede-26102011/> Indkaldelse til introduktionsmøder om MUS for fastansatte VIP´ere og gruppeledere <http://phys.au.dk/nyhed/artikel/mus-intro-moeder-28102011-og-2112011/> Se ansøgningsfrister <http://phys.au.dk/arrangementer-og-nyheder/opslag/> Se kalenderen for kommend <http://phys.au.dk/arrangementer-og-nyheder/>e arrangementer <http://phys.au.dk/arrangementer-og-nyheder/> *IFA Nyheder lægges løbende på hjemmesiden.* Linket hertil ligger på forsiden, nederst i menuen til højre. Login til de interne sider for medarbejdere <http://phys.au.dk/om-instituttet/generel-information/medarbejderinformation…> : bruger: intra kode: ifaintra Bidrag sendes til ifa-nyt(a)phys.au.dk <mailto:ifa-nyt@phys.au.dk> __________ *IFA News, week 43* Einstein's "spooky action" improves precision measurements <http://science.au.dk/en/news-and-events/news-article/artikel/einsteins-spoo…> Nobel Prize in Physics has links to Aarhus University <http://www.au.dk/en/about/news/single/artikel/nobelprisen-i-fysik-traekker-…> Agenda for Works Committee Meeting, 26 October <http://phys.au.dk/nyhed/artikel/dagsorden-su-moede-26102011/> Notice to introductory meeting about staff development interviews ("MUS") for permanent academic staff members and group leaders <http://phys.au.dk/nyhed/artikel/mus-intro-moeder-28102011-og-2112011/> Please find the list of calls <http://phys.au.dk/en/events-and-news/calls/> See coming events and news<http://phys.au.dk/en/events-and-news/> *Remember to check the internal news online**. * Go to News for employees at IFA <http://phys.au.dk/en/the-department/general-information/information-for-emp…>. Login to internal news online <http://phys.au.dk/om-instituttet/generel-information/medarbejderinformation…>: user: intra password: ifaintra** Medvenlig hilsen / Kind regards Mette Lie -- Mette Alstrup Lie Department of Physics and Astronomy Aarhus University Ny Munkegade 120 DK-8000 Aarhus C Denmark Office 1522-214 e-mail:lie@phys.au.dk Tel: +45 8942 3619

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[vip-all] Referat fra FU møder den 13.10 kan ses her:
by Ruth Laursen 24 Oct '11

24 Oct '11

http://phys.au.dk/nyhed/artikel/referat-af-moeder-i-ifas-forretningsudvalg-… vh ruth ******************************* Ruth Laursen Head of Department Secretariat Department of Physics and Astronomy Aarhus University Ny Munkegade 120 8000 Aarhus C Denmark e-mail: ruth(a)phys.au.dk Office: 1522-212 Mobile: 2338 2335

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[vip-all] lokalnumre - telefon
by Ruth Laursen 20 Oct '11

20 Oct '11

Kære alle Jeg er i gang med at gennemgå hele telefonlisten for instituttet med alle de fejl og mangler som den er behæftet med. I november måned får alle på AU nye lokalnumre (som vi ikke selv kan bestemme). Jeg skal aflevere alle data midt i næste uge, men jeg har et spørgsmål, som jeg gerne vil bede jer melde tilbage på: Hvis nogle af jer IKKE bruger jeres fastnet, men udelukkende mobiltelefonnummeret, kan vi lige så godt afmelde lokalnummeret, så vi ikke betaler abonnement på det. Hvis man IKKE har et lokalnummer, kan man kun kontaktes på sit mobilnummer (ligesom IT afdelingen har det nu). Og husk: at i det nye telefonsystem er det ikke dyrere at ringe op fra sin mobil end det er fra en fastnet. Giv lige besked hvis I ikke bruger jeres fastnetforbindelse, ikke? Alle lokalnumre i kælderen bliver bibeholdt pga. manglende dækning af mobilnettet, og vi beder om oprettelse af nye lokalnumre i alle de nye laboratorier der er kommet efter ombygningen, og som har været uden telefonforbindelse siden. Vh Ruth ***************************** Ruth Laursen Head of Department Secretariat Department of Physics and Astronomy Aarhus University Ny Munkegade 120 DK - Aarhus C e-mail: ruth(a)phys.au.dk Phone: +45 8942 3706 Mobile: +45 2338 2335 Office: 1522-212

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