LEADER 04349nam 22007215 450 001 9910300412003321 005 20200702123420.0 010 $a3-319-07085-1 024 7 $a10.1007/978-3-319-07085-8 035 $a(CKB)3710000000205403 035 $a(EBL)1783008 035 $a(OCoLC)894170069 035 $a(SSID)ssj0001298860 035 $a(PQKBManifestationID)11725153 035 $a(PQKBTitleCode)TC0001298860 035 $a(PQKBWorkID)11242258 035 $a(PQKB)10844687 035 $a(DE-He213)978-3-319-07085-8 035 $a(MiAaPQ)EBC1783008 035 $a(PPN)179927914 035 $a(EXLCZ)993710000000205403 100 $a20140722d2015 u| 0 101 0 $aeng 135 $aur|n|---||||| 181 $ctxt 182 $cc 183 $acr 200 10$aTunneling Dynamics in Open Ultracold Bosonic Systems $eNumerically Exact Dynamics ? Analytical Models ? Control Schemes /$fby Axel U. J. Lode 205 $a1st ed. 2015. 210 1$aCham :$cSpringer International Publishing :$cImprint: Springer,$d2015. 215 $a1 online resource (143 p.) 225 1 $aSpringer Theses, Recognizing Outstanding Ph.D. Research,$x2190-5053 300 $aDescription based upon print version of record. 311 $a3-319-07084-3 320 $aIncludes bibliographical references at the end of each chapters and index. 327 $aIntroduction -- Theory and Methods -- Benchmarks with Analytically Solvable Problems -- A Case Study with an attractive BEC: Comparison of Lattice and Continuous Space Theories -- Theoretical Considerations and Analytical Models on the Many-Body Physics of Tunneling Bosons -- Many-Boson Tunneling without a Threshold -- Many-Boson Tunneling with a Threshold -- Final Remarks. 330 $aThis thesis addresses the intriguing topic of the quantum tunnelling of many-body systems such as Bose-Einstein condensates. Despite the enormous amount of work on the tunneling of a single particle through a barrier, we know very little about how a system made of several or of many particles tunnels through a barrier to open space. The present work uses numerically exact solutions of the time-dependent many-boson Schrödinger equation to explore the rich physics of the tunneling to open space process in ultracold bosonic particles that are initially prepared as a Bose-Einstein condensate and subsequently allowed to tunnel through a barrier to open space. The many-body process is built up from concurrently occurring single particle processes that are characterized by different momenta. These momenta correspond to the chemical potentials of systems with decreasing particle number. The many-boson process exhibits exciting collective phenomena: the escaping particles  fragment and lose their coherence with the source and among each other, whilst correlations build up within the system. The detailed understanding of the many-body process is used to devise and test a scheme to control the final state, momentum distributions and even the correlation dynamics of the tunneling process. 410 0$aSpringer Theses, Recognizing Outstanding Ph.D. Research,$x2190-5053 606 $aQuantum theory 606 $aSuperconductivity 606 $aSuperconductors 606 $aQuantum computers 606 $aSpintronics 606 $aQuantum Physics$3https://scigraph.springernature.com/ontologies/product-market-codes/P19080 606 $aStrongly Correlated Systems, Superconductivity$3https://scigraph.springernature.com/ontologies/product-market-codes/P25064 606 $aQuantum Information Technology, Spintronics$3https://scigraph.springernature.com/ontologies/product-market-codes/P31070 615 0$aQuantum theory. 615 0$aSuperconductivity. 615 0$aSuperconductors. 615 0$aQuantum computers. 615 0$aSpintronics. 615 14$aQuantum Physics. 615 24$aStrongly Correlated Systems, Superconductivity. 615 24$aQuantum Information Technology, Spintronics. 676 $a624.193 700 $aLode$b Axel U. J$4aut$4http://id.loc.gov/vocabulary/relators/aut$0792804 801 0$bMiAaPQ 801 1$bMiAaPQ 801 2$bMiAaPQ 906 $aBOOK 912 $a9910300412003321 996 $aTunneling Dynamics in Open Ultracold Bosonic Systems$91773033 997 $aUNINA