Browsing Τμήμα Φυσικής / Department of Physics by Title

Now showing items 1281-1300 of 1410

    • Article  

      Temperature effect on photothermal reflectance signal: application to ion implanted and amorphous silicon 

      Christofides, Constantinos; IA Vitkin; Mandelis, Andreas (1990)
      Abstract Photothermal reflectance study as a function of temperature of processed silicon (crystalline, ion-implanted, amorphous) has been performed for the first time. The influence of the substrate on the observed signal ...
    • Article  

      Temperature-induced reflectivity changes and activation of hydrogen sensitive optically thin palladium films on silicon oxide 

      Kalli, Kyriacos; Othonos, Andreas S.; Christofides, Constantinos; Spetz, AL; Lundstrom, I. (1998)
      The optical properties of several thin metal film palladium-silicon oxide structures are examined at room temperature before and after annealing to 200 degrees C and also at 90 degrees C-in all cases in the presence of ...
    • Article  

      Temporal evolution of effects of ultrafast carrier dynamics in In 0.33Ga0.67N: Above and near the bandgap 

      Lioudakis, Emmanouil E.; Iliopoulos, Eleftherios; Georgakilas, A.; Othonos, Andreas S. (2007)
      Ultrafast carrier dynamics in the In0.33Ga0.67N epilayer were investigated in detail, using femtosecond transient differential non-degenerate optical absorption measurements. Following an excitation at 400 nm with fluence ...
    • Article  

      Testing general relativity with cosmology: a synopsis of the parametrized post-Friedmann approach 

      Ferreira, P. G.; Baker, T.; Skordis, C. (2014)
      More than half a century after the Chapel Hill meeting of 1957, the landscape of general relativity has been transformed. In relativistic cosmology we are entering an era in which we can seriously consider testing some of ...
    • Article  

      Testing QCD with hypothetical tau leptons 

      Brodsky, S. J.; Peláez, J. R.; Toumbas, Nicolaos K. (1999)
      We construct new phenomenological tests of perturbative QCD by considering a hypothetical τ lepton of arbitrary mass which decays hadronically through the electromagnetic current. Its hadronic branching ratio can be computed ...
    • Article  

      Tests of enhanced leading order QCD in W boson plus jets events from 1.8 TeV p̄p collisions 

      Affolder, T.; Akimoto, H.; Akopian, A.; Albrow, M. G.; Amaral, P.; Amendolia, S. R.; Amidei, D.; Anikeev, K.; Antos, J.; Apollinari, G.; Arisawa, T.; Asakawa, T.; Ashmanskas, W.; Azfar, F.; Azzi-Bacchetta, P.; Bacchetta, N.; Bailey, M. W.; Bailey, S.; de Barbaro, P.; Barbaro-Galtieri, A.; Barnes, V. E.; Barnett, B. A.; Barone, M.; Bauer, G.; Bedeschi, F.; Belforte, S.; Bell, W. H.; Bellettini, G.; Bellinger, J.; Benjamin, D.; Bensinger, J.; Beretvas, Andrew; Berge, J. P.; Berryhill, J.; Bevensee, B.; Bhatti, A.; Binkley, M.; Bisello, D.; Bishai, M.; Blair, R. E.; Blocker, C.; Bloom, K.; Blumenfeld, B.; Blusk, S. R.; Bocci, A.; Bodek, A.; Bokhari, W.; Bolla, G.; Bonushkin, Yu Ye; Bortoletto, D.; Boudreau, J.; Brandl, A.; van den Brink, S.; Bromberg, C.; Brozovic, M.; Bruner, N.; Buckley-Geer, E.; Budagov, J.; Budd, H. S.; Burkett, K.; Busetto, G.; Byon-Wagner, A.; Byrum, K. L.; Calafiura, P.; Campbell, M.; Carithers, W.; Carlson, J.; Carlsmith, D.; Cassada, J.; Castro, A.; Cauz, D.; Cerri, A.; Chan, A. W.; Chang, P. S.; Chang, P. T.; Chapman, J.; Chen, C.; Chen, Y. C.; Cheng, M. -T; Chertok, M.; Chiarelli, G.; Chirikov-Zorin, I.; Chlachidze, G.; Chlebana, F.; Christofek, L.; Chu, M. L.; Chung, Y. S.; Ciobanu, C. I.; Clark, A. G.; Connolly, A.; Conway, J.; Cooper, J. M.; Cordelli, M.; Cranshaw, J.; Cronin-Hennessy, D.; Cropp, R.; Culbertson, R.; Dagenhart, D.; D'Auria, S.; DeJongh, F.; Dell'Agnello, Simone; Dell'Orso, M.; Demortier, L.; Deninno, M.; Derwent, P. F.; Devlin, T.; Dittmann, J. R.; Donati, S.; Done, J.; Dorigo, T.; Eddy, N.; Einsweiler, K.; Elias, John E.; Engels, Eugene; Errede, D.; Errede, S.; Fan, Q.; Feild, R. G.; Fernandez, J. P.; Ferretti, C.; Field, R. D.; Fiori, I.; Flaugher, B.; Foster, G. W.; Franklin, M.; Freeman, J.; Friedman, J.; Fukui, Y.; Furic, I.; Galeotti, S.; Gallinaro, M.; Gao, T.; Garcia-Sciveres, M.; Garfinkel, A. F.; Gatti, P.; Gay, C.; Gerdes, D. W.; Giannetti, P.; Gorelov, I.; Giromini, P.; Glagolev, V.; Gold, M.; Goldstein, J.; Gordon, A.; Goshaw, A. T.; Gotra, Y.; Goulianos, Konstantin; Green, C.; Gris, P.; Groer, L.; Grosso-Pilcher, C.; Guenther, M.; Guillian, G.; Guimaraes da Costa, J.; Guo, R. S.; Haas, R. M.; Haber, C.; Hafen, E.; Hahn, S. R.; Hall, C.; Handa, T.; Handler, R.; Hao, W.; Happacher, F.; Hara, K.; Hardman, A. D.; Harris, R. M.; Hartmann, F.; Hatakeyama, K.; Hauser, J.; Heinrich, J.; Heiss, A.; Herndon, M.; Hoffman, K. D.; Holck, C.; Hollebeek, R.; Holloway, L.; Hughes, R.; Huston, J.; Huth, J.; Ikeda, H.; Incandela, J.; Introzzi, G.; Iwai, J.; Iwata, Y.; James, E.; Jensen, H.; Jones, M.; Joshi, U.; Kambara, H.; Kamon, T.; Kaneko, T.; Karr, K.; Kasha, H.; Kato, Y.; Keaffaber, T. A.; Kelley, K.; Kelly, M.; Kennedy, R. D.; Kephart, R.; Khazins, D.; Kikuchi, T.; Kilminster, B.; Kim, B. J.; Kim, D. H.; Kim, H. S.; Kim, M. J.; Kim, S. H.; Kim, Y. K.; Kirby, M.; Kirk, M.; Kirsch, L.; Klimenko, S.; Koehn, P.; Köngeter, A.; Kondo, K.; Konigsberg, J.; Kordas, K.; Korn, A.; Korytov, A.; Kovács, Eve V.; Kroll, J.; Kruse, M.; Kuhlmann, S. E.; Kurino, K.; Kuwabara, T.; Laasanen, A. T.; Lai, N.; Lami, S.; Lammel, S.; Lamoureux, J. I.; Lancaster, M.; Latino, G.; LeCompte, T.; Lee, A. M.; Lee, K.; Leone, S.; Lewis, J. D.; Lindgren, M.; Liss, T. M.; Liu, J. B.; Liu, Y. C.; Lockyer, N.; Loken, J.; Loreti, M.; Lucchesi, D.; Lukens, P.; Lusin, S.; Lyons, L.; Lys, J.; Madrak, R.; Maeshima, K.; Maksimovic, P.; Malferrari, L.; Mangano, M.; Mariotti, M.; Martignon, G.; Martin, A.; Matthews, J. A. J.; Mayer, J.; Mazzanti, P.; McFarland, K. S.; McIntyre, P.; McKigney, E.; Menguzzato, M.; Menzione, A.; Mesropian, C.; Meyer, A.; Miao, T.; Miller, R.; Miller, J. S.; Minato, H.; Miscetti, S.; Mishina, M.; Mitselmakher, G.; Moggi, N.; Moore, E.; Moore, R.; Morita, Y.; Mulhearn, M.; Mukherjee, A.; Muller, T.; Munar, A.; Murat, P.; Murgia, S.; Nachtman, J.; Nahn, S.; Nakada, H.; Nakaya, T.; Nakano, I.; Nelson, C.; Nelson, T.; Neuberger, D.; Newman-Holmes, C.; Ngan, C. -Y P.; Nicolaidi, P.; Niu, H.; Nodulman, L.; Nomerotski, A.; Oh, S. H.; Ohmoto, T.; Ohsugi, T.; Oishi, R.; Okusawa, T.; Olsen, J.; Orejudos, W.; Pagliarone, C.; Palmonari, F.; Paoletti, R.; Papadimitriou, Vaia; Pappas, S. P.; Partos, D.; Patrick, J.; Pauletta, G.; Paulini, M.; Paus, C.; Pescara, L.; Phillips, T. J.; Piacentino, G.; Pitts, K. T.; Pompos, A.; Pondrom, L.; Pope, G.; Popovic, M.; Prokoshin, F.; Proudfoot, J.; Ptohos, Fotios; Pukhov, O.; Punzi, G.; Ragan, K.; Rakitine, A.; Reher, D.; Reichold, A.; Ribon, A.; Riegler, W.; Rimondi, F.; Ristori, L.; Riveline, M.; Robertson, W. J.; Robinson, A.; Rodrigo, T.; Rolli, S.; Rosenson, L.; Roser, R.; Rossin, R.; Safonov, A.; Denis, R. S.; Sakumoto, W. K.; Saltzberg, D.; Sansoni, A.; Santi, L.; Sato, H.; Savard, P.; Schlabach, P.; Schmidt, E. E.; Schmidt, M. P.; Schmitt, M.; Scodellaro, L.; Scott, A.; Scribano, A.; Segler, S.; Seidel, S.; Seiya, Y.; Semenov, A.; Semeria, F.; Shah, T.; Shapiro, M. D.; Shepard, P. F.; Shibayama, T.; Shimojima, M.; Shochet, M.; Siegrist, J.; Signorelli, G.; Sill, A.; Sinervo, P.; Singh, P.; Slaughter, A. J.; Sliwa, K.; Smith, C.; Snider, F. D.; Solodsky, A.; Spalding, J.; Speer, T.; Sphicas, Paris A.; Spinella, F.; Spiropulu, Maria; Spiegel, L.; Steele, J.; Stefanini, A.; Strologas, John; Strumia, F.; Stuart, D.; Sumorok, K.; Suzuki, T.; Takano, T.; Takashima, R.; Takikawa, K.; Tamburello, P.; Tanaka, M.; Tannenbaum, B.; Taylor, W.; Tecchio, M.; Teng, P. K.; Terashi, K.; Tether, S.; Theriot, D.; Thompson, A. S.; Thurman-Keup, R.; Tipton, P.; Tkaczyk, S.; Tollefson, K.; Tollestrup, A.; Toyoda, H.; Trischuk, W.; de Trocóniz, J. F.; Tseng, J.; Turini, N.; Ukegawa, F.; Vaiciulis, T.; Valls, J.; Vejcik, S.; Velev, G.; Vidal, R.; Vilar, R.; Volobouev, I.; Vucinic, D.; Wagner, R. G.; Wagner, R. L.; Wahl, J.; Wallace, N. B.; Walsh, A. M.; Wang, C.; Wang, C. H.; Wang, M. J.; Watanabe, T.; Waters, D.; Watts, T.; Webb, R.; Wenzel, H.; Wester, W. C.; Wicklund, A. B.; Wicklund, E.; Williams, H. H.; Wilson, P.; Winer, B. L.; Winn, D.; Wolbers, S.; Wolinski, D.; Wolinski, J.; Wolinski, S.; Worm, S.; Wu, X.; Wyss, J.; Yagil, A.; Yao, W.; Yeh, G. P.; Yeh, P.; Yoh, J.; Yosef, C.; Yoshida, T.; Yu, I.; Yu, S.; Yu, Z.; Zanetti, A.; Zetti, F.; Zucchelli, S. (2001)
      We present a study of events with W bosons and hadronic jets produced in p̄p collisions at a center of mass energy of 1.8 TeV. The data consist of 51400 W → e ν decay candidates from 108 pb-1 of integrated luminosity ...
    • Article  

      Theories of structure-function relationships for bridge-mediated electron transfer reactions 

      Skourtis, Spiros S.; Beratan, David N. (1999)
    • Article  

      Theory of photopyroelectric spectroscopy of a two-layer sample 

      Christofides, Constantinos; Seas, Antonios (1995)
    • Article  

      Theory of vortices in weakly-Josephson-coupled layered superconductors 

      Theodorakis, Stavros (1990)
      We present a theory for a vortex lattice in a layered superconductor, with very weak coupling between the layers. We use the Lawrence-Doniach model to show that only the component of the magnetic field that is perpendicular ...
    • Article  

      Thermal and quantum superstring cosmologies 

      Catelin-Jullien, T.; Kounnas, Costas; Partouche, Hervé; Toumbas, Nicolaos K. (2008)
      We consider four dimensional heterotic string backgrounds for which supersymmetry is spontaneously broken via the Scherk-Schwarz mechanism on an internal spatial cycle and by finite temperature effects. We concentrate on ...
    • Article  

      Thermal duality and non-singular cosmology in d-dimensional superstrings 

      Kounnas, Costas; Partouche, Hervé; Toumbas, Nicolaos K. (2012)
      We are presenting the basic ingredients of a stringy mechanism able to resolve both the Hagedorn instabilities of finite temperature superstrings as well as the initial singularity of the induced cosmology in arbitrary ...
    • Article  

      Thermal wave hydrogen gas sensor characterized via photothermal deflection measurements 

      Kalli, Kyriacos; Othonos, Andreas S.; Christofides, Constantinos (1999)
      A study of a thermal wave hydrogen sensor characterized using transverse optical beam deflection measurements is presented, including a comparison of experimental data with a simple theoretical model. The sensor consists ...
    • Article  

      Thermal-Wave Photopyroelectric Characterization of Advanced Materials - State-Of-The-Art 

      Christofides, Constantinos (1993)
      This article reviews the history, background, theoretical basis, development, attempts to optimize, and experimental performance of the photopyroelectric technique for the optothermal characterization of advanced materials ...
    • Article  

      Thermal/quantum effects and induced superstring cosmologies 

      Catelin-Jullien, T.; Kounnas, Costas; Partouche, Hervé; Toumbas, Nicolaos K. (2008)
      We consider classical superstring theories on flat four-dimensional space-times, and where N = 4 or N = 2 supersymmetry is spontaneously broken. We obtain the thermal and quantum corrections at the string one-loop level ...
    • Conference Object  

      Thermodynamic properties of QCD in external magnetic fields 

      Bali, G. S.; Bruckmann, F.; Constantinou, Martha; Costa, Marios Gil; Endrödi, Gergely; Fodor, Zoltán; Katz, Sándor D.; Krieg, S.; Panagopoulos, Haralambos G.; Schäfer, A.; Szabó, Kálmán K. (2012)
      We consider the effect of strong external electromagnetic fields on thermodynamic observables in QCD, through lattice simulations with 1+1+1 flavors of staggered quarks at physical quark masses. Continuum extrapolated ...
    • Article  

      Thermodynamics of 1-flavor QCD 

      Alexandrou, Constantia; Boriçi, A.; Feo, A.; De Forcrand, P.; Galli, A.; Jegerlehner, F.; Takaishi, T. (1997)
      We present first results, for heavy to moderate quark masses, of a study of thermodynamic properties of 1-flavor QCD, using the multiboson algorithm.
    • Article  

      Thermoelectronic-wave coupling in laser photothermal theory of semiconductors at elevated temperatures 

      Mandelis, Andreas; Nestoros, Marios; Christofides, Constantinos (1997)
      A quantitative analysis of linear temperature-dependent coupled thermoelectronic diffusion waves in the generation of the laser-induced IR photothermal radiometric signal from a photoexcited, plasma-wave-dominated, ...
    • Article  

      Thermophysical characterization of commercial paper by laser infrared radiometry 

      Mandelis, Andreas; Nestoros, Marios; Othonos, Andreas S.; Christofides, Constantinos (1997)
      Laser-induced, frequency-scanned infrared photothermal radiometry (PTR) was used successfully in a noncontacting manner to characterize commercial-quality xerographic paper, which was impossible to characterize optically ...
    • Article  

      The three-loop lattice free energy 

      Allés, B.; Campostrini, M.; Feo, A.; Panagopoulos, Haralambos G. (1994)
      We calculate the free energy of SU(N) gauge theories on the lattice, to three loops. Our result, combined with Monte Carlo data for the average plaquette, gives a more precise estimate of the gluonic condensate. © 1994.
    • Article  

      Three-loop results in QCD with Wilson fermions 

      Allés, B.; Christou, Chris; Feo, A.; Panagopoulos, Haralambos G.; Vicari, E. (1998)
      We calculate the third coefficient of the lattice beta function in QCD with Wilson fermions, extending the pure gauge results of Lüscher and Weisz