Prof. Dr. Valentina Forini

Profil

• EU: Europäisches Netzwerk für Teilchenphysik, Gitterfeldtheorie und EXtreme Computing (EuroPLEx)

  Quelle ↗

  Förderer: Horizon 2020: Innovative Training Network ITN Zeitraum: 01/2019 - 09/2023 Projektleitung: Prof. Dr. Valentina Forini

• GRK 2575/1: Überdenken der Quantenfeldtheorie

  Quelle ↗

  Förderer: DFG Graduiertenkolleg Zeitraum: 04/2020 - 09/2024 Projektleitung: Prof. Dr. Jan Plefka

• GRK 2575/2: Überdenken der Quantenfeldtheorie

  Quelle ↗

  Förderer: DFG Graduiertenkolleg Zeitraum: 10/2024 - 03/2029 Projektleitung: Prof. Dr. Jan Plefka

• GRK 2575: Überdenken der Quantenfeldtheorie

  Quelle ↗

  Förderer: DFG Graduiertenkolleg Zeitraum: 04/2020 - 03/2029 Projektleitung: Prof. Dr. Jan Plefka

• Heisenberg-Professur Quantenstrings und Eichfelder bei beliebiger Kopplung

  Quelle ↗

  Förderer: DFG Heisenberg Programm Zeitraum: 09/2023 - 08/2026 Projektleitung: Prof. Dr. Valentina Forini

• NW/1: Gauge fields from Strings: Novel tools for longstanding problems

  Quelle ↗

  Förderer: DFG Nachwuchsgruppe Zeitraum: 04/2012 - 09/2015 Projektleitung: Prof. Dr. Valentina Forini

• NW/2: Gauge fields from Strings: Novel tools for longstanding problems II

  Quelle ↗

  Förderer: DFG Nachwuchsgruppe Zeitraum: 03/2015 - 11/2016 Projektleitung: Prof. Dr. Valentina Forini

• NW/3: Gauge fields from Strings: Novel tools for longstanding problems III

  Quelle ↗

  Förderer: DFG Nachwuchsgruppe Zeitraum: 11/2016 - 12/2017 Projektleitung: Prof. Dr. Valentina Forini

• RISC Software GmbH

  PT

  30 Treffer61.2%
  • EU: Scattering Amplitudes: From Geometry to EXperiment (SAGEX)
    P

    61.2%

• Gesellschaft für angewandte Mathematik und Mechanik

  P

  17 Treffer56.8%
  • Workshop Reliable Methods and Mathematical Modeling
    P

    56.8%

• Science & Startups Berlin

  T

  8 Treffer55.1%
  • Zuwendung im Rahmen des Programms „exist – Existenzgründungen aus der Wissenschaft“ aus dem Bundeshaushalt, Einzelplan 09, Kapitel 02, Titel 68607, Haushaltsjahr 2026, sowie aus Mitteln des Europäischen Strukturfonds (hier Euro-päischer Sozialfonds Plus – ESF Plus) Förderperiode 2021-2027 – Kofinanzierung für das Vorhaben: „exist Women“
    T

    55.1%

• Europäische Kommission

  P

  22 Treffer55.0%
  • Generalized Quatum Batalin-Vilkovisky Formalism and Graphical Calculus
    P

    55.0%

• Bernstein Center for Computational Neuroscience Berlin

  PT

  27 Treffer52.7%
  • SFB 1315/2: Mechanismen und Störungen der Gedächtniskonsolidierung: Von Synapsen zur Systemebene
    P

    52.7%
  • DFG-Sachbeihilfe: Aufmerksamkeit und sensorische Integration im aktiven Sehen von bewegten Objekten
    T

    48.2%

• Johannesstift Diakonie Proclusio gGmbH

  T

  6 Treffer52.5%
  • Professionalisierung in der Deutsch-als-Zweitsprache-Förderung für geflüchtete Menschen mit Lernschwierigkeiten
    T

    52.5%

• SoftBank Robotics

  P

  22 Treffer52.4%
  • Embodied Audition for RobotS
    P

    52.4%

• Magwel NV

  PT

  18 Treffer52.0%
  • EU: Simulation in Multiscale Physical and Biological Systems (STIMULATE)
    T

    52.0%

• International Business Machines Corporation Research GmbH

  PT

  34 Treffer52.0%
  • EU: Simulation in Multiscale Physical and Biological Systems (STIMULATE)
    T

    52.0%
  • EU: Bottom-Up Generation of atomicalLy Precise syntheTIc 2D MATerials for High Performance in Energy and Electronic Applications – A Multi-Site Innovative Training Action (ULTIMATE)
    T

    51.4%

• NVIDIA GmbH

  PT

  18 Treffer52.0%
  • EU: Simulation in Multiscale Physical and Biological Systems (STIMULATE)
    T

    52.0%

• Generalized quark-antiquark potential at weak and strong coupling

  2011

  Journal of High Energy Physics · 143 Zitationen · DOI

• Gauge invariant finite size spectrum of the giant magnon

  2007

  Physics Letters B · 75 Zitationen · DOI

• Twist-three at five loops, Bethe ansatz and wrapping

  2009

  Journal of High Energy Physics · 68 Zitationen · DOI

• Roadmap on Wilson loops in 3d Chern–Simons-matter theories

  2020

  Journal of Physics A Mathematical and Theoretical · 65 Zitationen · DOI

  Abstract This is a compact review of recent results on supersymmetric Wilson loops in ABJ(M) and related theories. It aims to be a quick introduction to the state of the art in the field and a discussion of open problems. It is divided into short chapters devoted to different questions and techniques. Some new results, perspectives and speculations are also presented. We hope this might serve as a baseline for further studies of this topic.

• Two-dimensional S-matrices from unitarity cuts

  2013

  Journal of High Energy Physics · 63 Zitationen · DOI

• The generalized cusp in ${ {\rm AdS}}_4\times \mathbb {C}{ {\rm P}}^3$ and more one-loop results from semiclassical strings

  2013

  Journal of Physics A Mathematical and Theoretical · 62 Zitationen · DOI

  We evaluate the exact one-loop partition function for fundamental strings whose world surface ends on a cusp at the boundary of AdS(4) and has a 'jump' in CP3. This allows us to extract the stringy prediction for the ABJM-generalized cusp anomalous dimension Gamma(ABJM)(cusp) (phi, theta) up to NLO in sigma-model perturbation theory. With a similar analysis, we present the exact partition functions for folded closed string solutions moving in the AdS(3) parts of AdS(4) x CP3 and AdS(3) x S-3 x S-3 x S-1 backgrounds. Results are obtained applying to the string solutions relevant for the AdS(4)/CFT3 and AdS(3)/CFT2 correspondence the tools previously developed for their AdS(5) x S-5 counterparts.

• Structure of large spin expansion of anomalous dimensions at strong coupling

  2008

  Nuclear Physics B · 59 Zitationen · DOI

  The anomalous dimensions of planar N=4 SYM theory operators like tr(ΦD+SΦ) expanded in large spin S have the asymptotics γ=flnS+fc+1S(f11lnS+f10)+⋯ , where f (the universal scaling function or cusp anomaly), fc and fmn are given by power series in the 't Hooft coupling λ. The subleading coefficients appear to be related by the so-called functional relation and parity (reciprocity) property of the function expressing γ in terms of the conformal spin of the collinear group. Here we study the structure of such large spin expansion at strong coupling via AdS/CFT, i.e. by using the dual description in terms of folded spinning string in AdS5. The large spin expansion of the classical string energy happens to have exactly the same structure as that of γ in the perturbative gauge theory. Moreover, the functional relation and the reciprocity constraints on the coefficients are also satisfied. We compute the leading string 1-loop corrections to the coefficients fc, f11, f10 and verify the functional/reciprocity relations at subleading 1λ order. This provides a strong indication that these relations hold not only in weak coupling (gauge-theory) but also in strong coupling (string-theory) perturbative expansions.

• Quark-antiquark potential in AdS at one loop

  2010

  Journal of High Energy Physics · 55 Zitationen · DOI

• The scaling function at strong coupling from the quantum string Bethe equations

  2007

  Journal of High Energy Physics · 51 Zitationen · DOI

• Precision calculation of 1/4-BPS Wilson loops in AdS5×S5

  2016

  Journal of High Energy Physics · 48 Zitationen · DOI

  We study the strong coupling behaviour of 1/4-BPS circular Wilson loops (a family of “latitudes”) in $$ \mathcal{N}=4 $$ Super Yang-Mills theory, computing the one-loop corrections to the relevant classical string solutions in AdS5 ×S5. Supersymmetric localization provides an exact result that, in the large ’t Hooft coupling limit, should be reproduced by the sigma-model approach. To avoid ambiguities due to the absolute normalization of the string partition function, we compare the ratio between the generic latitude and the maximal 1/2-BPS circle: any measure-related ambiguity should simply cancel in this way. We use the Gel’fand-Yaglom method with Dirichlet boundary conditions to calculate the relevant functional determinants, that present some complications with respect to the standard circular case. After a careful numerical evaluation of our final expression we still find disagreement with the localization answer: the difference is encoded into a precise “remainder function”. We comment on the possible origin and resolution of this discordance.

• Perturbative computation of string one-loop corrections to Wilson loop minimal surfaces in AdS 5 × S 5

  2017

  Journal of High Energy Physics · 47 Zitationen · DOI

  We revisit the computation of the 1-loop string correction to the “latitude” minimal surface in AdS 5 × S 5 representing 1/4 BPS Wilson loop in planar $$ \mathcal{N}=4 $$ SYM theory previously addressed in arXiv:1512.00841 and arXiv:1601.04708 . We resolve the problem of matching with the subleading term in the strong coupling expansion of the exact gauge theory result (derived previously from localization) using a different method to compute determinants of 2d string fluctuation operators. We apply perturbation theory in a small parameter (angle of the latitude) corresponding to an expansion near the AdS 2 minimal surface representing 1/2 BPS circular Wilson loop. This allows us to compute the corrections to the heat kernels and zeta-functions of the operators in terms of the known heat kernels on AdS 2. We apply the same method also to two other examples of Wilson loop surfaces: generalized cusp and k-wound circle.

• Remarks on the geometrical properties of semiclassically quantized strings

  2015

  Journal of Physics A Mathematical and Theoretical · 39 Zitationen · DOI

  We discuss some geometrical aspects of the semiclassical quantization of string solutions in type IIB Green–Schwarz action on ${{\\rm{AdS}}}_{5}\\times {{\\rm{S}}}^{5}.$ We concentrate on quadratic fluctuations around classical configurations, expressing the relevant differential operators in terms of (intrinsic and extrinsic) invariants of the background geometry. The aim of our exercise is to present some compact expressions encoding the spectral properties of bosonic and fermionic fluctuations. The appearing of non-trivial structures on the relevant bundles and their role in concrete computations are also considered. We corroborate the presentation of general formulas by working out explicitly a couple of relevant examples, namely the spinning string and the latitude BPS Wilson loop.

• A new rolling tachyon solution of cubic string field theory

  2005

  Journal of High Energy Physics · 33 Zitationen · DOI

• Four loop reciprocity of twist two operators in N=4 SYM

  2009

  Max Planck Digital Library · 28 Zitationen · DOI

  The four loop universal anomalous dimension of twist-2 operators in N=4 SYM has been recently conjectured. In this paper, we prove that it obeys a generalized Gribov-Lipatov reciprocity, previously known to hold at the three loop level.

• Reciprocity of gauge operators in 𝒩 = 4 SYM

  2008

  Journal of High Energy Physics · 26 Zitationen · DOI

• On DIS Wilson coefficients in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" altimg="si1.gif" overflow="scroll"><mml:mi mathvariant="script">N</mml:mi><mml:mo>=</mml:mo><mml:mn>4</mml:mn></mml:math>super Yang–Mills theory

  2013

  Physics Letters B · 23 Zitationen · DOI

  In this Letter we evaluate Wilson coefficients for “deep inelastic scattering” (DIS) in N=4 SYM theory at NLO in perturbation theory, using as a probe an R-symmetry conserved current. They exhibit uniform transcendentality and coincide with the piece of highest transcendentality in the corresponding QCD Wilson coefficients. We extract from the QCD result a NNLO prediction for the N=4 SYM Wilson coefficient, and comment on the features of its Regge limit asymptotics.

• Generalized Gribov‐Lipatov Reciprocity and AdS/CFT

  2010

  Advances in High Energy Physics · 23 Zitationen · DOI

  Planar 𝒩 = 4 SYM theory and QCD share the gluon sector, suggesting the investigation of Gribov‐Lipatov reciprocity in the supersymmetric theory. Since the AdS/CFT correspondence links 𝒩 = 4 SYM and superstring dynamics on AdS 5 × S 5 , reciprocity is also expected to show up in the quantum corrected energies of certain classical string configurations dual to gauge theory twist‐operators. We review recent results confirming this picture and revisiting the old idea of Gribov‐Lipatov reciprocity as a modern theoretical tool useful for the study of open problems in AdS/CFT.

• Exact potential and scattering amplitudes from the tachyon non-linear  -function

  2004

  Journal of High Energy Physics · 18 Zitationen · DOI

• Finite size corrections and integrability of Script N = 2 SYM and DLCQ strings on a pp-wave

  2006

  Journal of High Energy Physics · 15 Zitationen · DOI

• One-loop spectroscopy of semiclassically quantized strings: bosonic sector

  2015

  Journal of Physics A Mathematical and Theoretical · 13 Zitationen · DOI

  We make a further step in the analytically exact quantization of spinning string states in semiclassical approximation, by evaluating the exact one-loop partition function for a class of two-spin string solutions for which quadratic fluctuations form a non-trivial system of coupled modes. This is the case of a folded string in the SU(2) sector, in the limit described by a quantum Landau-Lifshitz model. The same applies to the full bosonic sector of fluctuations over the folded spinning string in AdS(5) with an angular momentum J in S-5. Fluctuations are governed by a special class of fourth-order differential operators, with coefficients being meromorphic functions on the torus, which we are able to solve exactly.

• Anomalous dimensions of finite size field strength operators in 𝒩 = 4 SYM

  2007

  Journal of High Energy Physics · 11 Zitationen · DOI

• Green-Schwarz superstring on the lattice

  2016

  Journal of High Energy Physics · 10 Zitationen · DOI

  We consider possible discretizations for a gauge-fixed Green-Schwarz action of Type IIB superstring. We use them for measuring the action, from which we extract the cusp anomalous dimension of planar $$ \mathcal{N}=4 $$ SYM as derived from AdS/CFT, as well as the mass of the two AdS excitations transverse to the relevant null cusp classical string solution. We perform lattice simulations employing a Rational Hybrid Monte Carlo (RHMC) algorithm and two Wilson-like fermion discretizations, one of which preserves the global SO(6) symmetry the model. We compare our results with the expected behavior at various values of $$ g=\frac{\sqrt{\lambda }}{4\pi } $$ . For both the observables, we find a good agreement for large g, which is the perturbative regime of the sigma-model. For smaller values of g, the expectation value of the action exhibits a deviation compatible with the presence of quadratic divergences. After their non-perturbative subtraction the continuum limit can be taken, and suggests a qualitative agreement with the non-perturbative expectation from AdS/CFT. Furthermore, we detect a phase in the fermion determinant, whose origin we explain, that for small g leads to a sign problem not treatable via standard reweigthing. The continuum extrapolations of the observables in the two different discretizations agree within errors, which is strongly suggesting that they lead to the same continuum limit. Part of the results discussed here were presented earlier in [1].

• QCD-like properties for anomalous dimensions in N=4 SYM

  2008

  arXiv (Cornell University) · 10 Zitationen · DOI

  In this contribution it is shown how closed formulas for anomalous dimensions of two classes of operators in N=4 SYM can be derived, either by investigating the numerics or on the basis of QCD-inspired assumptions. We discuss the case of twist three "gauge" operators in which a complete proof of reciprocity can be carried out.

• Generalized Gribov-Lipatov Reciprocity and AdS/CFT

  2010

  arXiv (Cornell University) · 7 Zitationen · DOI

  Planar N=4 SYM theory and QCD share the gluon sector, suggesting the investigation of Gribov-Lipatov reciprocity in the supersymmetric theory. Since the AdS/CFT correspondence links N=4 SYM and superstring dynamics on AdS5xS5, reciprocity is also expected to show up in the quantum corrected energies of certain classical string configurations dual to gauge theory twist-operators. We review recent results confirming this picture and revisiting the old idea of Gribov-Lipatov reciprocity as a modern theoretical tool useful for the study of open problems in AdS/CFT.

• Lattice perturbation theory for the null cusp string

  2022

  Physical review. D/Physical review. D. · 5 Zitationen · DOI

  We reconsider the problem of discretizing the worldsheet for the gauge-fixed Green-Schwarz superstring on a null cusp background, and present a setup which fully preserves its global $U(1)\ifmmode\times\else\texttimes\fi{}SU(4)$ symmetry. We discuss divergences by power counting on the lattice, and study renormalizability at one loop with the example of one-point functions and one bosonic correlator of the worldsheet excitations. In order to remove UV divergences at one loop, it is necessary to introduce two extra parameters in the action, which need to be either fine-tuned at tree level or renormalized at one loop.

• Deutsches Elektronen-Synchrotron

  GRK 2575/2: Überdenken der Quantenfeldtheorie

  other

• Max-Planck-Institut für Gravitationsphysik - Albert-Einstein-Institut

  GRK 2575/2: Überdenken der Quantenfeldtheorie

  other

Name

Prof. Dr. Valentina Forini

Titel

Prof. Dr.

Fakultät

Mathematisch-Naturwissenschaftliche Fakultät

Institut

Institut für Physik

Arbeitsgruppe

Theoretische Teilchenphysik: Eichfelder und Stringtheorie

Telefon

+49 30 2093-66462

HU-FIS-Profil

Quelle ↗

Zuletzt gescrapt

26.4.2026, 01:04:48