Sommerfeld Theory Colloquium (ASC)
By Michael Haack
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Description
The Arnold Sommerfeld Center for Theoretical Physics organizes regular colloquia about topics of current interest in the field of theoretical physics.
| Name | Description | Released | Price | ||
|---|---|---|---|---|---|
| 1 | VideoCosmological singularities, quantum chaos and prime numbers | At a singularity the continuum description of spacetime breaks down and one can hope that the microscopic constituents will be revealed. Over 50 years ago, Belinski-Khalatnikov-Lifshitz (BKL) argued that the dynamics of spacetime close to the Big Bang s | 11 7 2025 | Free | View in iTunes |
| 2 | VideoActive feedback and functionality in model tissues | In the development of animals, tissues self-organise starting from a single cell into lay- ers, shapes and patterns. This active mechanical process operates beyond the theoretical framework of reaction-diffusion equations such as Turing patterns. At the | 11 7 2025 | Free | View in iTunes |
| 3 | VideoArnold Sommerfeld Theory Colloquium | How to detect Majorana fermions in topological insulators | 25 6 2025 | Free | View in iTunes |
| 4 | VideoArnold Sommerfeld Theory Colloquium | Gedanken World without Higgs Fields | 25 6 2025 | Free | View in iTunes |
| 5 | VideoArnold Sommerfeld Theory Colloquium | Maximal Supersymmetry, Light-Front Dynamics and Exceptional Symmetries | 25 6 2025 | Free | View in iTunes |
| 6 | VideoArnold Sommerfeld Theory Colloquium | A simple proof of the Kochen-Specker theorem on the problem of hidden variables | 25 6 2025 | Free | View in iTunes |
| 7 | VideoSommerfeld Theory Colloquium | Z' models and the early LHC | 25 6 2025 | Free | View in iTunes |
| 8 | VideoArnold Sommerfeld Theory Colloquium | The search for a perfect fluid: is string-theory relevant for ultracold atoms? | 25 6 2025 | Free | View in iTunes |
| 9 | VideoArnold Sommerfeld Theory Colloquium | The Inverse Ising Problem | 25 6 2025 | Free | View in iTunes |
| 10 | VideoArnold Sommerfeld Theory Colloquium | Testing the Dark Energy Paradigm and Beyond | 25 6 2025 | Free | View in iTunes |
| 11 | VideoArnold Sommerfeld Theory Colloquium | Gravitational Waves from Coalescing Binary Black Holes: Theoretical and Experimental Challenges | 25 6 2025 | Free | View in iTunes |
| 12 | VideoSommerfeld Theory Colloquium | Testing fundamental physics with CMB | 25 6 2025 | Free | View in iTunes |
| 13 | VideoSommerfeld Theory Colloquium | The Massive Black Hole and Nuclear Star Cluster of the Milky Way | 25 6 2025 | Free | View in iTunes |
| 14 | VideoSommerfeld Theory Colloquium | Anderson Localization: Looking Forward | 25 6 2025 | Free | View in iTunes |
| 15 | VideoSommerfeld Theory Colloquium | Testing Strings at the LHC? | 25 6 2025 | Free | View in iTunes |
| 16 | VideoSommerfeld Lecture Series | Scenarios of Baryogenesis and "Experimental" Search for Cosmic Antimatter | 25 6 2025 | Free | View in iTunes |
| 17 | VideoSommerfeld Theory Colloquium | Imaging Astrophysical Turbulent Convection and Dynamo Action in the Sun | 25 6 2025 | Free | View in iTunes |
| 18 | VideoSommerfeld Lecture Series | Quantum Criticality, High Tc Superconductivity and the AdS/CFT Correspondence of String Theory | 25 6 2025 | Free | View in iTunes |
| 19 | VideoQuantum Theory and Realism - 'Esquisse d'un Programme' | Sommerfeld Theory Colloquium | 25 6 2025 | Free | View in iTunes |
| 20 | VideoCritical Acceleration | Sommerfeld Theory Colloquium | 25 6 2025 | Free | View in iTunes |
| 21 | VideoThe Many Faces of Conformal Interfaces | Sommerfeld Theory Colloquium | 25 6 2025 | Free | View in iTunes |
| 22 | VideoNovel Topologically Ordered Phases of Condensed Matter | Sommerfeld Theory Colloquium | 25 6 2025 | Free | View in iTunes |
| 23 | VideoApplication of Reflection Positivity: Graphene and Other Examples | Sommerfeld Theory Colloquium | 25 6 2025 | Free | View in iTunes |
| 24 | VideoNeutrino Paradigm and Large Hadron Collider | Sommerfeld Theory Colloquium | 25 6 2025 | Free | View in iTunes |
| 25 | VideoLorentz Violation, Gravity, Dissipation and Holography | Sommerfeld Theory Colloquium | 25 6 2025 | Free | View in iTunes |
| 26 | VideoTurbulence: scaling and beyond | Sommerfeld Theory Colloquium | 25 6 2025 | Free | View in iTunes |
| 27 | VideoCosmological Symmetry Breaking as Origin of the Hot Early Universe | Sommerfeld Theory Colloquium | 25 6 2025 | Free | View in iTunes |
| 28 | VideoNon-equilibrium Relaxation and Aging Kinetics | Sommerfeld Theory Colloquium | 25 6 2025 | Free | View in iTunes |
| 29 | VideoThe next ten years of dark energy research | Sommerfeld Theory Colloquium | 25 6 2025 | Free | View in iTunes |
| 30 | VideoLattice QCD in Regensburg | Sommerfeld Theory Colloquium | 25 6 2025 | Free | View in iTunes |
| 31 | VideoOut-of-equilibrium phenomena from a new perspective: an Ab-Initio approach | Sommerfeld Theory Colloquium | 25 6 2025 | Free | View in iTunes |
| 32 | VideoContacting the moon | Sommerfeld Theory Colloquium | 25 6 2025 | Free | View in iTunes |
| 33 | VideoThe role of duality in transport in imperfect Luttinger liquid | Sommerfeld Theory Colloquium | 25 6 2025 | Free | View in iTunes |
| 34 | VideoPlanck mission: the 2013 cosmology results | Sommerfeld Theory Colloquium | 25 6 2025 | Free | View in iTunes |
| 35 | VideoExact, Broken and Approximate Symmetries | Sommerfeld Theory Colloquium | 25 6 2025 | Free | View in iTunes |
| 36 | VideoNegative absolute temperatures for mobile particles | Sommerfeld Theory Colloquium | 25 6 2025 | Free | View in iTunes |
| 37 | VideoQuantum Gravity with Anisotropic Scaling and the Multicritical Universe | Sommerfeld Theory Colloquium | 25 6 2025 | Free | View in iTunes |
| 38 | VideoReal Time Imaging of Thermal and Quantum Fluctuations | Sommerfeld Theory Colloquium | 25 6 2025 | Free | View in iTunes |
| 39 | VideoThe History behind the Brout-Englert-Mechanism and the Standard Model | Sommerfeld Theory Colloquium | 25 6 2025 | Free | View in iTunes |
| 40 | VideoUltrahigh Energy Cosmic Rays: probe of extreme particle physics | Sommerfeld Theory Colloquium | 25 6 2025 | Free | View in iTunes |
| 41 | VideoNear-Pristine Gas at High Redshifts: First Stars, Big-Bang Nucleosynthesis, and Limits on Dark Radiation | Sommerfeld Theory Colloquium | 25 6 2025 | Free | View in iTunes |
| 42 | VideoStatus of the Electroweak Standard Model | Sommerfeld Theory Colloquium | 25 6 2025 | Free | View in iTunes |
| 43 | VideoStatistical Physics and Information Theory : New Frontiers | Sommerfeld Theory Colloquium | 25 6 2025 | Free | View in iTunes |
| 44 | VideoEinstein and Quantum Mechanics: It's Not What You Think | Sommerfeld Theory Colloquium | 25 6 2025 | Free | View in iTunes |
| 45 | VideoCascade of phase transitions near Quantum Critical Point | Sommerfeld Theory Colloquium | 25 6 2025 | Free | View in iTunes |
| 46 | VideoHarmony of Scattering Amplitudes and Form Factors | Sommerfeld Theory Colloquium | 25 6 2025 | Free | View in iTunes |
| 47 | VideoHigher-Spin Gravity and Higher Spin Black Holes in Three Dimensions | Sommerfeld Theory Colloquium | 25 6 2025 | Free | View in iTunes |
| 48 | VideoA Closer Look at Black Holes | Sommerfeld Theory Colloquium | 25 6 2025 | Free | View in iTunes |
| 49 | VideoSearching for New Forces Using Torsion Pendula | Sommerfeld Theory Colloquium | 25 6 2025 | Free | View in iTunes |
| 50 | VideoHigher Spin --- CFT duality | Sommerfeld Theory Colloquium | 25 6 2025 | Free | View in iTunes |
| 51 | VideoLattice gauge theory insights | Sommerfeld Theory Colloquium | 25 6 2025 | Free | View in iTunes |
| 52 | VideoCosmology with Type Ia Supernovae: where do we stand today? | Sommerfeld Theory Colloquium | 25 6 2025 | Free | View in iTunes |
| 53 | VideoPhenomenological and Cosmological Implications of String Theory Models | Sommerfeld Theory Colloquium | 25 6 2025 | Free | View in iTunes |
| 54 | VideoTopological Superconductivity and Unconventional pairing in Oxide Interfaces | Sommerfeld Theory Colloquium | 25 6 2025 | Free | View in iTunes |
| 55 | VideoThe development of twistor geometry for the description of fundamental physics | Sommerfeld Theory Colloquium | 25 6 2025 | Free | View in iTunes |
| 56 | VideoPrecision Measurements of the Cosmic Microwave Background | Sommerfeld Theory Colloquium | 25 6 2025 | Free | View in iTunes |
| 57 | VideoTwo-Dimensional Melting Transition: New Algorithms, New Insights | Sommerfeld Theory Colloquium | 25 6 2025 | Free | View in iTunes |
| 58 | VideoTurbulence without Linear Instability | Sommerfeld Theory Colloquium | 25 6 2025 | Free | View in iTunes |
| 59 | VideoExtreme Light and Quantum Fields | Sommerfeld Theory Colloquium | 25 6 2025 | Free | View in iTunes |
| 60 | VideoSupermassive Black Holes: From Jets to the Event Horizon | Sommerfeld Theory Colloquium | 25 6 2025 | Free | View in iTunes |
| 61 | VideoQuantum Mechanics and Geometry of Spacetime | Sommerfeld Theory Colloquium | 25 6 2025 | Free | View in iTunes |
| 62 | VideoErgodicity, Entanglement and Many-Body Quantum Dynamics in Localization | Sommerfeld Theory Colloquium | 25 6 2025 | Free | View in iTunes |
| 63 | VideoThe Search for New Interactions at the LHC: The top quark Window | Sommerfeld Theory Colloquium | 25 6 2025 | Free | View in iTunes |
| 64 | VideoRevisiting the S-matrix bootstrap | Sommerfeld Theory Colloquium | 25 6 2025 | Free | View in iTunes |
| 65 | VideoFrom materials science to basic physics | Sommerfeld Theory Colloquium | 25 6 2025 | Free | View in iTunes |
| 66 | VideoGone with the wind: The demise of protoplanetary discs and the birth of planets | Sommerfeld Theory Colloquium | 25 6 2025 | Free | View in iTunes |
| 67 | VideoQuantum Critical Points in Metals: Non-Fermi Liquids and their Field Theoretical Description | Sommerfeld Theory Colloquium | 25 6 2025 | Free | View in iTunes |
| 68 | VideoEffects of Dark Matter linear in Interaction Strength | Sommerfeld Theory Colloquium | 25 6 2025 | Free | View in iTunes |
| 69 | VideoCan a quantum computer solve optimization problems more Efficiently than a classical computer? | Sommerfeld Theory Colloquium | 25 6 2025 | Free | View in iTunes |
| 70 | VideoThe Black Hole Information Paradox Revisited | Sommerfeld Theory Colloquium | 25 6 2025 | Free | View in iTunes |
| 71 | VideoScattering Amplitudes from Geometry | Sommerfeld Theory Colloquium | 25 6 2025 | Free | View in iTunes |
| 72 | VideoThe Physics of Active Matter | Sommerfeld Theory Colloquium | 25 6 2025 | Free | View in iTunes |
| 73 | VideoChiral symmetry breaking, emergent Higgs mechanism, and critical matter | Sommerfeld Theory Colloquium | 25 6 2025 | Free | View in iTunes |
| 74 | VideoUnderstanding the LIGO gravitational wave event (GW150914) | Sommerfeld Theory Colloquium | 25 6 2025 | Free | View in iTunes |
| 75 | VideoFrom Emergent Gravity to Dark Energy and Dark Matter | Sommerfeld Theory Colloquium | 25 6 2025 | Free | View in iTunes |
| 76 | VideoModeling microbial diversity | Sommerfeld Theory Colloquium | 25 6 2025 | Free | View in iTunes |
| 77 | VideoEmergent cosmology from quantum gravity: the universe as a quantum condensate | Sommerfeld Theory Colloquium | 25 6 2025 | Free | View in iTunes |
| 78 | VideoGauge Theories and Non-Commutative Geometry | Sommerfeld Theory Colloquium | 25 6 2025 | Free | View in iTunes |
| 79 | VideoHigh order correlation and what we can learn about the solution for many body problems from experiment | Sommerfeld Theory Colloquium | 25 6 2025 | Free | View in iTunes |
| 80 | VideoBlack Holes, Quantum Information, and Unification | Sommerfeld Theory Colloquium | 25 6 2025 | Free | View in iTunes |
| 81 | VideoBlack holes as harbingers of new gravitational physics | Sommerfeld Theory Colloquium | 25 6 2025 | Free | View in iTunes |
| 82 | VideoR-matrix Quantization of the Ruijsenaars-Schneider Models | Sommerfeld Theory Colloquium | 25 6 2025 | Free | View in iTunes |
| 83 | VideoSpace-Time-Matter: Finite Projective Geometry as a Quantum World with Elementary Particles | Sommerfeld Theory Colloquium | 25 6 2025 | Free | View in iTunes |
| 84 | VideoPulling Yourself by your Bootstraps in Quantum Field Theory | Sommerfeld Theory Colloquium | 25 6 2025 | Free | View in iTunes |
| 85 | VideoParticle Scattering and Number Theory | Sommerfeld Theory Colloquium | 25 6 2025 | Free | View in iTunes |
| 86 | VideoStrange effects in the neutrino oscillations | Sommerfeld Theory Colloquium | 25 6 2025 | Free | View in iTunes |
| 87 | VideoFunctional renormalization group approach to correlated fermion systems | Sommerfeld Theory Colloquium | 25 6 2025 | Free | View in iTunes |
| 88 | VideoQuantum Gravity and the Swampland | Sommerfeld Theory Colloquium | 25 6 2025 | Free | View in iTunes |
| 89 | VideoTopological phases of matter: From classification to detection in experiments | Sommerfeld Theory Colloquium | 25 6 2025 | Free | View in iTunes |
| 90 | VideoPrecision at the LHC: why and how | Sommerfeld Theory Colloquium | 25 6 2025 | Free | View in iTunes |
| 91 | VideoInfluence of the fermionic exchange symmetry in the 1-particle picture | Sommerfeld Theory Colloquium | 25 6 2025 | Free | View in iTunes |
| 92 | VideoPlaying with the building blocks of the Universe | Sommerfeld Theory Colloquium | 25 6 2025 | Free | View in iTunes |
| 93 | VideoConjectures on Quantum Gravity and their Realisation in String Theory | Sommerfeld Theory Colloquium | 25 6 2025 | Free | View in iTunes |
| 94 | VideoBranes, Islands, and Massive Gravitons | Sommerfeld Theory Colloquium | 25 6 2025 | Free | View in iTunes |
| 95 | VideoRe-examining Cosmic Acceleration | Sommerfeld Theory Colloquium | 25 6 2025 | Free | View in iTunes |
| 96 | VideoParticle physics: Plan B | Sommerfeld Theory Colloquium | 25 6 2025 | Free | View in iTunes |
| 97 | VideoSearching for Cosmic Strings in New Observational Windows | Sommerfeld Theory Colloquium | 25 6 2025 | Free | View in iTunes |
| 98 | VideoTopological Phase Transitions in Population Dynamics | Sommerfeld Theory Colloquium | 25 6 2025 | Free | View in iTunes |
| 99 | VideoHunting for the stochastic gravitational-wave background: Implications for astrophysics, high energy physics, and theories of gravity | Sommerfeld Theory Colloquium | 25 6 2025 | Free | View in iTunes |
| 100 | VideoQuantum simulators for fundamental physics | Sommerfeld Theory Colloquium | 25 6 2025 | Free | View in iTunes |
| 101 | VideoLimits of strong CP | Sommerfeld Theory Colloquium | 25 6 2025 | Free | View in iTunes |
| 102 | VideoFrom Bell's theorem to Quantum Networks | Sommerfeld Theory Colloquium | 25 6 2025 | Free | View in iTunes |
| 103 | VideoSelf-organization and self-assembly in biologically inspired non-equilibrium systems | Sommerfeld Theory Colloquium | 25 6 2025 | Free | View in iTunes |
| 104 | VideoEntanglement in complex quantum systems: From quantum information to many-body systems and back | Sommerfeld Theory Colloquium | 25 6 2025 | Free | View in iTunes |
| 105 | VideoIs Dark Matter made of Primordial Black Holes? JWST might tell! | Sommerfeld Theory Colloquium | 25 6 2025 | Free | View in iTunes |
| 106 | VideoThe "Flavor" of Particle Physics | Sommerfeld Theory Colloquium | 25 6 2025 | Free | View in iTunes |
| 107 | VideoWhat can we compute with quantum devices? | Sommerfeld Theory Colloquium | 25 6 2025 | Free | View in iTunes |
| 108 | VideoSymmetry in quantum gravity | Sommerfeld Theory Colloquium | 25 6 2025 | Free | View in iTunes |
| 109 | VideoHow Much Structure Is Needed for Huge Quantum Speedups? | Sommerfeld Theory Colloquium | 25 6 2025 | Free | View in iTunes |
| 110 | VideoHow a physical system can be turned into a self-learning machine | Sommerfeld Theory Colloquium | 25 6 2025 | Free | View in iTunes |
| 111 | VideoThe asymptotic structure of gravity at spatial infinity (D=4 and D>4) | Sommerfeld Theory Colloquium | 25 6 2025 | Free | View in iTunes |
| 112 | VideoChemically Active Wetting | Sommerfeld Theory Colloquium | 25 6 2025 | Free | View in iTunes |
| 113 | VideoThe mathematics behind Feynman integrals | Sommerfeld Theory Colloquium | 25 6 2025 | Free | View in iTunes |
| 114 | VideoFantastic periods and where to find them | Sommerfeld Theory Colloquium | 25 6 2025 | Free | View in iTunes |
| 115 | VideoEmergence of geometry and meaning, through gauge and strings dynamics | Sommerfeld Theory Colloquium | 25 6 2025 | Free | View in iTunes |
| 116 | VideoDeciphering the Beginning | Sommerfeld Theory Colloquium | 25 6 2025 | Free | View in iTunes |
| 117 | VideoInterplay between mechanics and chemistry in living systems | Sommerfeld Theory Colloquium | 25 6 2025 | Free | View in iTunes |
| 118 | VideoMulti-scale fluctuations in non-equilibrium systems | Sommerfeld Theory Colloquium | 25 6 2025 | Free | View in iTunes |
| 119 | VideoNew developments in supermembrane theory | Sommerfeld Theory Colloquium | 25 6 2025 | Free | View in iTunes |
| 120 | VideoMultispherical shapes, constant-mean-curvature surfaces, and the endoplasmic reticulum | Sommerfeld Theory Colloquium | 25 6 2025 | Free | View in iTunes |
| 121 | VideoAnomalous metals | Sommerfeld Theory Colloquium | 25 6 2025 | Free | View in iTunes |
| 122 | VideoPositivity constraints on theory space | Sommerfeld Theory Colloquium | 25 6 2025 | Free | View in iTunes |
| 123 | VideoModern aspects of quantum physics and topology | Sommerfeld Theory Colloquium | 25 6 2025 | Free | View in iTunes |
| 124 | VideoThe Nobel Prizes in Physics in 1932/33: Heisenberg, Schrödinger and Dirac | Sommerfeld Theory Colloquium | 25 6 2025 | Free | View in iTunes |
| 125 | VideoThe Underlying Scaling Laws and Universal Statistical Structure of Complex Datasets | Sommerfeld Theory Colloquium | 25 6 2025 | Free | View in iTunes |
| 126 | VideoThe protein doctors: how chaperons repair damaged proteins | Sommerfeld Theory Colloquium | 25 6 2025 | Free | View in iTunes |
| 127 | VideoIdentifying the Time Scales in Electron-Positron Production from Ultra-Strong Electric Fields | Sommerfeld Theory Colloquium | 25 6 2025 | Free | View in iTunes |
| 128 | VideoEffects of electronic correlations in BaOsO3 and tetragonal CuO | Sommerfeld Theory Colloquium | 25 6 2025 | Free | View in iTunes |
| 129 | VideoWhat is String Theory? | Sommerfeld Theory Colloquium | 25 6 2025 | Free | View in iTunes |
| 130 | VideoResurgence and non-perturbative physics | Sommerfeld Theory Colloquium | 25 6 2025 | Free | View in iTunes |
| 131 | VideoIsing’s Challenge and the Conformal Bootstrap | Sommerfeld Theory Colloquium | 25 6 2025 | Free | View in iTunes |
| 132 | VideoAdvances and Challenges in Solving the Two-Body Problem in General Relativity | Sommerfeld Theory Colloquium | 25 6 2025 | Free | View in iTunes |
| 133 | VideoLoop Blow-up Inflation | Sommerfeld Theory Colloquium | 25 6 2025 | Free | View in iTunes |
| 134 | VideoApplications of Machine Learning and Neural Networks to Quantum Systems | Sommerfeld Theory Colloquium | 25 6 2025 | Free | View in iTunes |
| 135 | VideoThe massless limit of massive gauge fields | Sommerfeld Theory Colloquium | 25 6 2025 | Free | View in iTunes |
| 136 | VideoCan we tame the electronic Schrödinger equation? | Sommerfeld Theory Colloquium | 25 6 2025 | Free | View in iTunes |
| 137 | VideoThe erasure of topological defects and the saturation phenomenon | Sommerfeld Theory Colloquium | 25 6 2025 | Free | View in iTunes |
| 138 | VideoThinking positively: the numerical quantum mechanical bootstrap | Sommerfeld Theory Colloquium | 25 6 2025 | Free | View in iTunes |
| 139 | VideoDark bubbles and black shells - the darkest corners of the universe in a new light | Sommerfeld Theory Colloquium | 25 6 2025 | Free | View in iTunes |
| 140 | VideoFrom Quantum Scattering Amplitudes to Gravitational Wave Observables | Sommerfeld Theory Colloquium | 25 6 2025 | Free | View in iTunes |
| 141 | VideoGravity as a Quantum Computer | Sommerfeld Theory Colloquium | 25 6 2025 | Free | View in iTunes |
| 142 | VideoMicroscopic Bounds on Macroscopic Theories | Sommerfeld Theory Colloquium | 25 6 2025 | Free | View in iTunes |
| 143 | VideoWhat String Theory Teaches Us About Scattering amplitudes | Sommerfeld Theory Colloquium | 25 6 2025 | Free | View in iTunes |
| 144 | VideoMoire Systems as Quantum Simulators of Many Strongly Correlated System | Sommerfeld Theory Colloquium | 25 6 2025 | Free | View in iTunes |
| 145 | VideoPrimordial Black Holes After 50 Years: The Bright Side | Sommerfeld Theory Colloquium | 25 6 2025 | Free | View in iTunes |
| 146 | VideoActivating quantum matter | In driven open quantum matter, coherent many-body quantum dynamics, drive, and dissipation play equally significant roles. These systems span a wide range of examples, including cold atomic gases, exciton-polaritons in solid state, and quantum devices d | 25 6 2025 | Free | View in iTunes |
| 147 | VideoEcology and Perpetual Evolution in High Dimensions | In a simple, constant environment does evolution continue forever? Does extensive diversification via small genetic and ecological differences? What are general evolutionary consequences of organismic complexity? Hints from long term laboratory evolutio | 25 6 2025 | Free | View in iTunes |
| 148 | VideoMystery of highest energy particles in the Universe | Ultra-High-Energy Cosmic Rays (UHECRs) are particles with energies up to $3\times 10^20 eV$, originating from unknown sources and producing extensive air showers in Earth's atmosphere. In this talk, I will review the current status of UHECR observations | 25 6 2025 | Free | View in iTunes |
| 148 Items |
Customer Reviews
Very nice feed, but …
All uploads have the same date on them and not the dates of the talks, this is why my (and probably most) podcatcher sorts the talks wrong and provides the wrong episode in the feed.
