Rehren, Karl-Henning

[["dc.bibliographiccitation.firstpage","625"],["dc.bibliographiccitation.journal","Physics Letters B"],["dc.bibliographiccitation.lastpage","631"],["dc.bibliographiccitation.volume","773"],["dc.contributor.author","Mund, Jens"],["dc.contributor.author","Rehren, Karl-Henning"],["dc.contributor.author","Schroer, Bert"],["dc.date.accessioned","2019-07-09T11:44:45Z"],["dc.date.available","2019-07-09T11:44:45Z"],["dc.date.issued","2017"],["dc.description.abstract","The problem of accounting for the quantum degrees of freedom in passing from massive higher-spin potentials to massless ones, and the inverse problem of “fattening” massless tensor potentials of helicity ±hto their massive s ="],["dc.identifier.doi","10.1016/j.physletb.2017.08.058"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/14889"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/59087"],["dc.language.iso","en"],["dc.notes.intern","Merged from goescholar"],["dc.relation.issn","0370-2693"],["dc.relation.orgunit","Fakultät für Physik"],["dc.rights","CC BY 4.0"],["dc.subject.ddc","530"],["dc.title","Relations between positivity, localization and degrees of freedom: The Weinberg–Witten theorem and the van Dam–Veltman–Zakharov discontinuity"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","19"],["dc.bibliographiccitation.issue","1"],["dc.bibliographiccitation.journal","Letters in Mathematical Physics"],["dc.bibliographiccitation.lastpage","36"],["dc.bibliographiccitation.volume","103"],["dc.contributor.author","Rehren, Karl-Henning"],["dc.contributor.author","Tedesco, Gennaro"],["dc.date.accessioned","2018-11-07T09:30:48Z"],["dc.date.available","2018-11-07T09:30:48Z"],["dc.date.issued","2013"],["dc.description.abstract","We present a simple isomorphism between the algebra of one real chiral Fermi field and the algebra of n real chiral Fermi fields. The isomorphism preserves the vacuum state. This is possible by a \"change of localization\", and gives rise to new multilocal symmetries generated by the corresponding multilocal current and stress-energy tensor. The result gives a common underlying explanation of several remarkable recent results on the representation of the free Bose field in terms of free Fermi fields (Anguelova, arXiv:1112.3913, 2011; Anguelova, arXiv:1206.4026, 2012), and on the modular theory of the free Fermi algebra in disjoint intervals (Casini and Huerta, Class Quant Grav 26:185005, 2009; Longo et al., Rev Math Phys 22:331-354, 2010)."],["dc.identifier.doi","10.1007/s11005-012-0582-5"],["dc.identifier.isi","000313078400002"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/8861"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/31398"],["dc.notes.intern","Merged from goescholar"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Springer"],["dc.relation.issn","0377-9017"],["dc.rights","Goescholar"],["dc.rights.uri","https://goescholar.uni-goettingen.de/licenses"],["dc.title","Multilocal Fermionization"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","699"],["dc.bibliographiccitation.journal","Nuclear Physics B"],["dc.bibliographiccitation.lastpage","727"],["dc.bibliographiccitation.volume","924"],["dc.contributor.author","Mund, Jens"],["dc.contributor.author","Rehren, Karl-Henning"],["dc.contributor.author","Schroer, Bert"],["dc.date.accessioned","2019-07-09T11:44:46Z"],["dc.date.available","2019-07-09T11:44:46Z"],["dc.date.issued","2017"],["dc.description.abstract","Massive and massless potentials play an essential role in the perturbative formulation of particle inter-actions. Many difficulties arise due to the indefinite metric in gauge theoretic approaches, or the increase with the spin of the UV dimension of massive potentials. All these problems can be evaded in one stroke: modify the potentials by suitable terms that leave unchanged the field strengths, but are not polynomial in the momenta. This feature implies a weaker localization property: the potentials are “string-localized”. In this setting, several old issues can be solved directly in the physical Hilbert space of the respective parti-cles: We can control the separation of helicities in the massless limit of higher spin fields and conversely we recover massive potentials with 2s+1degrees of freedom by a smooth deformation of the massless potentials (“fattening”). We construct stress–energy tensors for massless fields of any helicity (thus evading the Weinberg–Witten theorem). We arrive at a simple understanding of the van Dam–Veltman–Zakharov discontinuity concerning, e.g., the distinction between a massless or a very light graviton. Finally, the use of string-localized fields opens new perspectives for interacting quantum field theories with, e.g., vector bosons or gravitons."],["dc.identifier.doi","10.1016/j.nuclphysb.2017.09.022"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/14891"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/59088"],["dc.language.iso","en"],["dc.notes.intern","Merged from goescholar"],["dc.relation.issn","1873-3832"],["dc.relation.orgunit","Fakultät für Physik"],["dc.rights","CC BY 4.0"],["dc.subject.ddc","530"],["dc.title","Helicity decoupling in the massless limit of massive tensor fields"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","315"],["dc.bibliographiccitation.issue","2"],["dc.bibliographiccitation.journal","Communications in Mathematical Physics"],["dc.bibliographiccitation.lastpage","350"],["dc.bibliographiccitation.volume","307"],["dc.contributor.author","Duetsch, Michael"],["dc.contributor.author","Rehren, Karl-Henning"],["dc.date.accessioned","2018-11-07T08:50:56Z"],["dc.date.available","2018-11-07T08:50:56Z"],["dc.date.issued","2011"],["dc.description.abstract","The problem of perturbative breakdown of conformal symmetry can be avoided, if a conformally covariant quantum field phi on d-dimensional Minkowski space-time is viewed as the boundary limit of a quantum field phi on d + 1-dimensional Anti-deSitter spacetime (AdS). We study the boundary limit in renormalized perturbation theory with polynomial interactions in AdS, and point out the differences as compared to renormalization directly on the boundary. In particular, provided the limit exists, there is no conformal anomaly. We compute explicitly the one-loop \"fish diagram\" on AdS(4) by differential renormalization, and calculate the anomalous dimension of the composite boundary field phi(2) with bulk interaction kappa phi(4)."],["dc.identifier.doi","10.1007/s00220-011-1311-0"],["dc.identifier.isi","000296650700002"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/7518"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/21809"],["dc.notes.intern","Merged from goescholar"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Springer"],["dc.relation.issn","0010-3616"],["dc.relation.orgunit","Fakultät für Physik"],["dc.rights","Goescholar"],["dc.rights.uri","https://goedoc.uni-goettingen.de/licenses"],["dc.title","Protecting the Conformal Symmetry via Bulk Renormalization on Anti deSitter Space"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","769"],["dc.bibliographiccitation.issue","3"],["dc.bibliographiccitation.journal","Communications in Mathematical Physics"],["dc.bibliographiccitation.lastpage","785"],["dc.bibliographiccitation.volume","311"],["dc.contributor.author","Longo, Roberto"],["dc.contributor.author","Rehren, Karl-Henning"],["dc.date.accessioned","2018-11-07T09:10:49Z"],["dc.date.available","2018-11-07T09:10:49Z"],["dc.date.issued","2012"],["dc.description.abstract","We construct local, boost covariant boundary QFT nets of von Neumann algebras on the interior of the Lorentz hyperboloid h(R), x(2) - t(2) > R-2, x > 0, in the two-dimensional Minkowski spacetime. Our first construction is canonical, starting with a local conformal net on R, and is analogous to our previous construction of local boundary CFT nets on the Minkowski half-space. This net is in a thermal state at Hawking temperature. Then, inspired by a recent construction by E. Witten and one of us, we consider a unitary semigroup that we use to build up infinitely many nets. Surprisingly, the one-particle semigroup is again isomorphic to the semigroup of symmetric inner functions of the disk. In particular, by considering the U(1)-current net, we can associate with any given symmetric inner function a local, boundary QFT net on h(R). By considering different states, we shall also have nets in a ground state, rather than in a KMS state."],["dc.identifier.doi","10.1007/s00220-011-1381-z"],["dc.identifier.fs","587230"],["dc.identifier.isi","000303449500008"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/8790"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/26578"],["dc.notes.intern","Merged from goescholar"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Springer"],["dc.relation.issn","0010-3616"],["dc.relation.orgunit","Fakultät für Physik"],["dc.rights","Goescholar"],["dc.rights.uri","https://goedoc.uni-goettingen.de/licenses"],["dc.title","Boundary Quantum Field Theory on the Interior of the Lorentz Hyperboloid"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","587"],["dc.bibliographiccitation.issue","2"],["dc.bibliographiccitation.journal","Communications in Mathematical Physics"],["dc.bibliographiccitation.lastpage","614"],["dc.bibliographiccitation.volume","345"],["dc.contributor.author","Longo, Roberto"],["dc.contributor.author","Morinelli, Vincenzo"],["dc.contributor.author","Rehren, Karl-Henning"],["dc.date.accessioned","2018-11-07T10:12:21Z"],["dc.date.available","2018-11-07T10:12:21Z"],["dc.date.issued","2016"],["dc.description.abstract","Particle states transforming in one of the infinite spin representations of the Poincar, group (as classified by E. Wigner) are consistent with fundamental physical principles, but local fields generating them from the vacuum state cannot exist. While it is known that infinite spin states localized in a spacelike cone are dense in the one-particle space, we show here that the subspace of states localized in any double cone is trivial. This implies that the free field theory associated with infinite spin has no observables localized in bounded regions. In an interacting theory, if the vacuum vector is cyclic for a double cone local algebra, then the theory does not contain infinite spin representations. We also prove that if a Doplicher-Haag-Roberts representation (localized in a double cone) of a local net is covariant under a unitary representation of the Poincar, group containing infinite spin, then it has infinite statistics. These results hold under the natural assumption of the Bisognano-Wichmann property, and we give a counter-example (with continuous particle degeneracy) without this property where the conclusions fail. Our results hold true in any spacetime dimension s + 1 where infinite spin representations exist, namely s >= 2."],["dc.identifier.doi","10.1007/s00220-015-2475-9"],["dc.identifier.isi","000378934300006"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/13421"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/40220"],["dc.notes.intern","Merged from goescholar"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Springer"],["dc.relation","info:eu-repo/grantAgreement/EC/FP7/669240/EU//QUEST"],["dc.relation.issn","1432-0916"],["dc.relation.issn","0010-3616"],["dc.relation.orgunit","Fakultät für Physik"],["dc.rights","CC BY 4.0"],["dc.title","Where Infinite Spin Particles are Localizable"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.artnumber","83"],["dc.bibliographiccitation.issue","4"],["dc.bibliographiccitation.journal","Journal of High Energy Physics"],["dc.bibliographiccitation.volume","2022"],["dc.contributor.author","Mund, Jens"],["dc.contributor.author","Rehren, Karl-Henning"],["dc.contributor.author","Schroer, Bert"],["dc.date.accessioned","2022-05-02T08:09:23Z"],["dc.date.accessioned","2022-08-16T12:36:13Z"],["dc.date.available","2022-05-02T08:09:23Z"],["dc.date.available","2022-08-16T12:36:13Z"],["dc.date.issued","2022-04-14"],["dc.date.updated","2022-07-29T11:35:16Z"],["dc.description.abstract","Abstract\r\n \r\n A non-perturbative and exactly solvable quantum field theoretical model for a “dressed Dirac field” is presented, that exhibits all the kinematical features of QED: an appropriate delocalization of the charged field as a prerequisite for the global Gauss Law, superselected photon clouds (asymptotic expectation values of the Maxwell field), infraparticle nature of charged particles that cannot be separated from their photon clouds, broken Lorentz symmetry. The model serves as an intermediate leg on a new roadmap towards full QED, formulated as an off-shell theory, i.e., including a perturbative construction of its interacting charged fields. It also fills a gap in recent discussions of the “Infrared Triangle”, and points the way towards a new scattering theory for theories with massless particles of helicity ≥ 1, in which infraparticles can be described at the level of charged fields, rather than just states."],["dc.identifier.citation","Journal of High Energy Physics. 2022 Apr 14;2022(4):83"],["dc.identifier.doi","10.1007/JHEP04(2022)083"],["dc.identifier.pii","18191"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/107366"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/112735"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-561"],["dc.relation.eissn","1029-8479"],["dc.rights","CC BY 4.0"],["dc.rights.holder","The Author(s)"],["dc.rights.uri","https://creativecommons.org/licenses/by/4.0"],["dc.subject","Nonperturbative Effects"],["dc.subject","Gauge Symmetry"],["dc.subject","Scattering Amplitudes"],["dc.title","Infraparticle quantum fields and the formation of photon clouds"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.subtype","original_ja"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","1165"],["dc.bibliographiccitation.issue","3"],["dc.bibliographiccitation.journal","Communications in Mathematical Physics"],["dc.bibliographiccitation.lastpage","1182"],["dc.bibliographiccitation.volume","285"],["dc.contributor.author","Longo, Roberto"],["dc.contributor.author","Rehren, Karl-Henning"],["dc.date.accessioned","2018-11-07T08:32:56Z"],["dc.date.available","2018-11-07T08:32:56Z"],["dc.date.issued","2009"],["dc.description.abstract","The relation between two-dimensional conformal quantum field theories with and without a timelike boundary is explored."],["dc.identifier.doi","10.1007/s00220-008-0459-8"],["dc.identifier.isi","000262410900015"],["dc.identifier.ppn","589180924"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?goescholar/3089"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/17453"],["dc.notes.intern","Merged from goescholar"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Springer"],["dc.relation.issn","0010-3616"],["dc.relation.orgunit","Fakultät für Physik"],["dc.rights","Goescholar"],["dc.rights.access","openAccess"],["dc.rights.uri","https://goedoc.uni-goettingen.de/licenses"],["dc.subject.ddc","530"],["dc.title","How to Remove the Boundary in CFT - An Operator Algebraic Procedure"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","225"],["dc.bibliographiccitation.issue","1"],["dc.bibliographiccitation.journal","Communications in Mathematical Physics"],["dc.bibliographiccitation.lastpage","250"],["dc.bibliographiccitation.volume","279"],["dc.contributor.author","Nikolov, Nikolay M."],["dc.contributor.author","Rehren, Karl-Henning"],["dc.contributor.author","Todorov, Ivan"],["dc.date.accessioned","2018-11-07T11:16:24Z"],["dc.date.available","2018-11-07T11:16:24Z"],["dc.date.issued","2008"],["dc.description.abstract","The twist two contribution in the operator product expansion of phi(1)(x(1)) phi(2)(x(2)) for a pair of globally conformal invariant, scalar fields of equal scaling dimension d in four space-time dimensions is a field V-1(x(1), x(2)) which is harmonic in both variables. It is demonstrated that the Huygens bilocality of V-1 can be equivalently characterized by a \"single-pole property\" concerning the pole structure of the (rational) correlation functions involving the product phi(1)(x(1)) phi(2)(x(2)). This property is established for the dimension d = 2 of phi(1), phi(2). As an application we prove that any system of GCI scalar fields of conformal dimension 2 (in four space-time dimensions) can be presented as a (possibly infinite) superposition of products of free massless fields."],["dc.identifier.doi","10.1007/s00220-007-0394-0"],["dc.identifier.isi","000253199000008"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/11189"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/54579"],["dc.notes.intern","Merged from goescholar"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Springer"],["dc.relation.issn","1432-0916"],["dc.relation.issn","0010-3616"],["dc.relation.orgunit","Fakultät für Physik"],["dc.title","Harmonic bilocal fields generated by globally conformal invariant scalar fields"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dc.type.version","published_version"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]